Capgemini
Company
Numerical Ability
Simple & Compound Interest
A sum of money becomes 2.5 times itself at 12.5% simple interest p.a.
What should be the period of investment to get this much return?
A. 6 years
B. 8 years
C. 12 years
D. 20 years
Read Solution (Total 9)
-
- C. 12 years
If sum=x and period(years)=t, then at 12.5% simple interest, x+ (x*t*12.5)/100= 2.5x, So t=12 - 9 years agoHelpfull: Yes(25) No(3)
- a. 12 years
principle=x, amount=2.5x
S.I= 2.5x-x=1.5x
put values of S.I and P in formula of S.I=(p*r*t)/100 - 9 years agoHelpfull: Yes(6) No(0)
- (x*12.5*T)/100=2.5x
T=20 years - 9 years agoHelpfull: Yes(6) No(8)
- PRINCIPAL -X
AMOUNT - 2.5X
SIMPLE INTEREST: A-P = 2.5X-X= 1.5X
SI = PTR/100
1.5X = X*T*12.5/100
T=12 YRS ( Note : he given amount but not simple interest, so 20 yrs is wrong ) - 9 years agoHelpfull: Yes(6) No(0)
- c. 12 years
if sum =9100 and period is T then 12.5% is rate of interest and amount is 250 and SI is 150 so with the formula SI= (p*r*t)/100.
150=(100*12.5*T)/100
t=12 years
- 9 years agoHelpfull: Yes(3) No(1)
- RT=(n-1)*100
where n=2.5, R=12.5 - 9 years agoHelpfull: Yes(2) No(2)
- P=x, SI=2.5x
SI=(P*R*T)/100
2.5x=(x*12.5*T)/100
T=(2.5x*100)/12.5x
T=20 yrs - 9 years agoHelpfull: Yes(2) No(5)
- let the sum of money be X
and time be t
using formula
(p*r*t)/100
(X*12.5*t)/100=2.5X
12.5Xt=250X
X gets cancle
12.5t=250
t=2500/125
so t=20 - 9 years agoHelpfull: Yes(2) No(4)
- option (c) is the correct answer ....simple logic. try to answer from question ..its time taking(if u r calculation is weak) but 100% correct . let us solve
let us take principle amount be 100
SI= P*R*T/100
consider the first option ; 6 years
100*6*12.5/100=75
as we know that it get double in 12 years ;150
150+100(Principle)=2.5 times of it self - 8 years agoHelpfull: Yes(1) No(0)
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