In what time will a sum of money double itself at 25/4 % p.a. simple interest?

Arul Shaijan   10 years AGO

1 year=25/4 %
so to attain 100%

(25/4)x=100
x=(100/25)*4
x=16

Like? Yes (39) | No (16)  

Sravanthi   10 years AGO

Principal = P, Amount = 2P
Simple interest = A - P = 2P – P = P
Ttme = (100 × S.I)/(P × R) = ( 100 × P)/(P × (25/4)) = 100/(25/4)=16years

Like? Yes (30) | No (9)  

Chirag Ranjan Lahiri   10 years AGO

Sum = x
then amount = 2x
so simple interest = 2x - x = x

now, T = (SI * 100)/(P * R)
T = (x * 100)/(x * 25/4) = 16 years..........

Like? Yes (30) | No (16)  

shraddha porwal   10 years AGO

let the sum=100
after t years it becomes 200,
therefore SI=200-100=100
now
SI=(P*R*T)/100
100=(100*(25/4)*t)/100
t=16 years

Like? Yes (18) | No (8)  

Ramesh Sriram   10 years AGO

I=ptr/100
sum of amount doubles hence
p=ptr/100
100=tr
100=25/4*t
t=16 years

Like? Yes (12) | No (5)  

arun   10 years AGO

we know that
SI = PTR/100
given
SI = P
R = 25/4
so P = (P*T*25)/400
400 = T*25
T = 400/25
T = 16 years

Like? Yes (10) | No (4)  

VENKATESAN A   10 years AGO

S . I = PRT/100
T= ( P * 100 * 4 ) / (P * 25 )
= 16 Years

Like? Yes (11) | No (7)  

Farid Ahmad   10 years AGO

Let sum be=x
it becomes double so that S.I=x
Rate=25/4 p.a
let it would be double after T years,then
Time=S.I*100/P*R
Time=x*100/x*25/4
Time=100*4/25
Time=16 years

Hence option 7 is correct

Like? Yes (7) | No (3)  

Azhar Syed   10 years AGO

x=x*N*6.25/100 ==> N=16

Like? Yes (5) | No (2)  

MAHARAJAN.G   10 years AGO

t = (1/r)(A/P - 1)
A = Total Accrued Amount (principal + interest)
P = Principal Amount
I = Interest Amount
r = Rate of Interest per year in decimal; r = R/100
t = Time Period involved in months or years
let consider p=1000
by the sum money doubled a=2000
r in decimal=25/4* 1/100=1/16
t=(1/1/16) (2000/1000-1)
t=16*(2-1)
t=16
ans) option 7

Like? Yes (6) | No (3)  

khushboo goenka   10 years AGO

x=x*25*t/4*100
so t=16 year

Like? Yes (3) | No   

gangulasiva   10 years AGO

interest and principal are same for money double
so for 6.25%,100/6.25=16 years

Like? Yes (3) | No (1)  

ramakrishnateja   10 years AGO

given the rate of interest is 25/4%, amount is 2p.
where p is the sum of money. we know that the p+s.i=amount.
P+(p*t*25/4)/100=2p. then t=16 years.

Like? Yes (3) | No (1)  

BHASKAR MANDAL   10 years AGO

100/(25/4)= 16 yrs

Like? Yes (3) | No (1)  

Chandra chur anand   10 years AGO

t=(2-1)*100*4/25
t=16 yr. ans

Like? Yes (4) | No (2)  

Devendra Marghade   10 years AGO

Money doubles when,interest=Sum of the money invested
If sum of money=x & time=t then
x*t*(25/4)*100= x
t=16

Like? Yes (3) | No (2)  

Sanu Panji   10 years AGO

100*4/25= 16 yrs

Like? Yes (5) | No (4)  

K.ARun   10 years AGO

In this case
I=ptr/100
I=P,r=25/4
on solving
t=16

Like? Yes (7) | No (6)  

sai   10 years AGO

a=P(1+t/16) if t=16 then a=2P

Like? Yes (3) | No (2)  

anu   10 years AGO

p+ptr/100=2p

Like? Yes (3) | No (2)  

niraj   10 years AGO

400/25=16

Like? Yes (2) | No (1)  

harika   10 years AGO

s.i=ptr/100 so,here given rate=25/4%p.a and let us p=s.i=p then 25/4=100*p/p*T=>T16

Like? Yes (2) | No (2)  

Gona Sadhana   10 years AGO

Given 25/4=6.25
as 6.25% it is 6.25/100=0.0625
Hence it needs to reach 100%, 100/100=1
Finally 0.0625x=1
x=1/0.0625
x=16yrs

Like? Yes (2) | No (2)  

nikhil birage   10 years AGO

at 6.25% for suppose take amount 100,,if we calculate then will get doubled amount after 16 years..

Like? Yes (2) | No (2)  

Md.Sultan Khichi   10 years AGO

Let x is the principle..
Amnts=2x
SI=2x-x=x
SI=prt/100
x=(x*25*t)/(100*4)
t=16
Ans. Ob. 7

Like? Yes (2) | No (3)  

CHANDAN KUMAR   10 years AGO

si=prt/100
si=p
p=prt/100
100=rt
100=25t/4
t=400/25=16 years

Like? Yes (1) | No (2)  

Yekollu Muneeswar   10 years AGO

simple interest formula SI=PTR/100
given that amount doubles means SI=P
P=PTR/100
100P=PT(25/4)
100*4=25T
T=16
so 7) 16 years

Like? Yes (2) | No (3)  

Anand   10 years AGO

Let Principal = P, then, Amount = 2P
So , S.I. = A - P = 2P – P = P
T = (100 × S.I)/(P × R) = ( 100 × P)/(P × 25/4) = 25/2 = 16 years

Like? Yes (3) | No (4)  

sunil bajpai   10 years AGO

p=p*25/4*100*t
t=16

Like? Yes (2) | No (3)  

ravi prakash   10 years AGO

p=s.i
t=100*si/p*r
=100*4/25
=16 years

Like? Yes (2) | No (3)  

sravani   10 years AGO

let the amouunt be X.
double will be 2X.
2X=X+(X*T*25/4 ) /100
T * 25/4 = 100
T=16 Years....

Like? Yes (1) | No (2)  

sreenivasa reddy   10 years AGO

let P=1000
then I=P*t*r/100
if p=double then P+i=2000->i=1000
so 1000={1000*t*(25/4)}/100 ->answer=16

Like? Yes (1) | No (2)  

vijay kumar singh   10 years AGO

let p=x,I=2x-x=x
time=x*100/x*25/4=16

Like? Yes (1) | No (2)  

Rahul Rathod   10 years AGO

1year= 25/4
4 year=25%
so answer =16
option is 7)16

Like? Yes (10) | No (11)  

priyanka    10 years AGO

16 years baese of answer

Like? Yes (2) | No (3)  

Ashwin Dinesh   10 years AGO

I = (pnr)/100 ...(1)
Amount will be double when I = p ...(2)
r = 25/4 ...given ...(3)
Putting (2) and (3) in (1) we get n = 16
Which is option 7)

Like? Yes (3) | No (4)  

chanukya reddy   10 years AGO

PTR/100
(1000*T*25/4)/100=1000
T=16YEARS

Like? Yes (2) | No (3)  

PAWAN KUMAR   10 years AGO

To double the investment, the interest should equal to principle in that much year.
Let principle be Rs x and time be t years.
Then,
x*25*t/100*4 = x => t = 100*4/25 = 16 years.

Like? Yes (2) | No (3)  

Ritu chouhan   10 years AGO

time=(100*(2-1)*4)/25
=16years

Like? Yes (1) | No (2)  

Ramesh sai   10 years AGO

25/4=6.25% interest PA
Let us consider sum to be 100/-
6.25-------->1st year
12.50------->2nd year
---
----
200------>16th year(Sum doubled)

Like? Yes (1) | No (2)  

sanjeev kumar   10 years AGO

ans 16 year

Like? Yes (2) | No (3)  

Sivaraj   10 years AGO

since its a simpleinterest just divide 100 by 25/4 will give the years in which it gets double. so its 16

Like? Yes (1) | No (2)  

Ajay Kumar Gupta   10 years AGO

2P=P+(P*t*25/4)/100
=> t=16 yrs
P=principle
t=time in yrs

Like? Yes (1) | No (2)  

Anjali   10 years AGO

let the principle, P=x
R=25/4 %
time in years, T=t
Now, ( (x * 25 * t)/(4 * 100) )+ x = 2*x
solving it we get, t=16 years

Like? Yes (1) | No (2)  

ganesh babu   10 years AGO

P(AMOUNT)=X
S.I=X
S.I=PNR/100
X=XN25/400
N=400/25
N=16

Like? Yes (2) | No (4)  

Satya narayan sen   10 years AGO

si = (x*25/4*16)/100 = x

A = x + x = 2x

Like? Yes (1) | No (3)  

ASHWANI SINGH   10 years AGO

Here, I=P
By I=PRT/100
1=RT/100
T=100/R
T=100/(25/4)
T=16 years

Like? Yes (1) | No (3)  

C sharma   10 years AGO

S.I = P*R*T/100;

Like? Yes (1) | No (3)  

mohit saxena   10 years AGO

for double the some of money
SI = P (sum of money).................(1)

since SI = (P*R*T)/100
P = (P*R*T)/100 FROM (1)
R*T = 100
T = 100/R
= 100/(25/4)
= 16 YEARS

Like? Yes (1) | No (3)  

Arijit Acharyya   10 years AGO

money will be double when ST=P
SI=p*r*t/100
p=(p*25/4*t)/100
t=400/25 = 16 years

Like? Yes (1) | No (3)  

Praveen singh   10 years AGO

let x be the interest on rs x
so x=(x*25/4*t)/100
so t=16 trs

Like? Yes (1) | No (3)  

Raman   10 years AGO

if x is principal and t is the time, then
x= x*(25/4)*t/100
t=16

Like? Yes (2) | No (4)  

NATISH KUMAR   10 years AGO

let Principal be 100
and SI be 100 so that Sum should be Eqal to 200(Double)

100=100*25/4*x/100 = 16 Years

Like? Yes (1) | No (3)  

K.NagaSugunaManasa   10 years AGO

Assume original amount=x
Total amount 2x=x+simpleinterest
so simple interest=x
Timeperiod=T
RateofInterest R=25/4
SimpleInterest=PTR/100;
x=(x*T*25/4)/100;
solve then T=16yeras
so option is 7

Like? Yes (1) | No (3)  

satyaprakash   10 years AGO

interest=(p*n*r)/100
the sum should be double i.e. interest should be equal to p.
therefore (p*n*r)/100=p
therefore n=100/r=100*4/25
n=16.....

Like? Yes (1) | No (3)  

tirupathi reddy   10 years AGO

S.I= PTR/100
If Simple Interest(S.I) = Princple amount(P)
P=PTR/100
TR=100
T=100/R (R=25/4%)
T=100*4/25
T=16 years

Like? Yes (1) | No (3)  

rahul kumar   10 years AGO

T= (n-1)*100/R

T=((2-1)*100)/(25/4) =16

Like? Yes (1) | No (3)  

Swagatam Kumar Das   10 years AGO

According to question let the amount is x
So 2x=x(1+RT/100) where R is 25/4
Sp x is= (4*100)/25 =16

Like? Yes (1) | No (3)  

Neha Wdhwa   10 years AGO

S.I=P*R*T/100

Like? Yes (1) | No (3)  

jagan   10 years AGO

here we want principle is will be double in certain period of time so intrest i=p so p=(ptr/100)
r=25/4 so 1=(25*t)/(4*100)
t=16

Like? Yes (1) | No (3)  

siddharth   10 years AGO

25/4=6.25

6.25*16=100(which is double)

Like? Yes (1) | No (3)  

Himanshu porwal   10 years AGO

Let rs be deposit=100
Increase per year 6.25%
In one year= 100+6.25=106.25
In 2nd year=106.25+6.640625=112.89
For n year,100.(0.01.6.25)^n=200
n=16(approx)
option 7 is crrect

Like? Yes (1) | No (3)  

Nupur   10 years AGO

To double the money the Principal must be equal to the SI

SI = P*R*T/100

Keeping SI=P

p=p*25*t/400

t=16

Like? Yes (1) | No (3)  

m malathi   10 years AGO

1/16th of total money is obtained in a year
so we need 16 years

Like? Yes (1) | No (3)  

nagaprasad   10 years AGO

let x be the total principal amount.
so therefore the interest also must be x.
as we know already
interest= (principal*rate of interest*span of years)/100

x=x* r*(25/4)/(100)
x gets cancelled both sides
t=100*4/(25)
t=16.
span of years(t)= 16 years

Like? Yes (2) | No (4)  

Mahendra Dasari   10 years AGO

PTR/100 so if the given is x then we can say x*6.25*16/100 so we get 2x

Like? Yes (1) | No (3)  

rajesh   10 years AGO

S.I. = A - P = 2P – P = P
T = (100 × S.I)/(P × R) = ( 100 × P)/(P × 25/4) = 16 years

Like? Yes (3) | No (5)  

A M ANKIT KALLURAYA   10 years AGO

SI=PTR/100..

Like? Yes (2) | No (5)  

Anubhav jain   10 years AGO

ASSUME P=X S.I=X R=25/4%
T=?
S.I= P*R*T/100
T=16 YEARS

Like? Yes (1) | No (4)  

shubham jaiswal   10 years AGO

every year =6.25
100/6.25=100

Like? Yes (1) | No (4)