Capgemini
Company
Numerical Ability
Simple & Compound Interest
A certain sum of money becomes Rs.750 in 2 years and becomes Rs.873 in 3.5 years.Find the sum and rate of interest.
A. Rs.400, 13% p.a B. Rs.500,11%p.a C. Rs.630,12%p.a D. Rs.600,13%p.a
Read Solution (Total 11)
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- 750=P+2I....(1)
873=P+3.5I...(2)
(2)-(1)=123=1.5I
I=82
for 2 years I=164
P+164=750
P=586
then 164=586*2*R/100
R=164*100/(586*2)
r=13.99% - 8 years agoHelpfull: Yes(29) No(0)
- s.i for 1 1/2 years=873-750=123
s.i for 2 years=123*4/3=164
principal=750-164=586,t=2,s.i=164
r=100*164/(586*2)=13.99% - 9 years agoHelpfull: Yes(22) No(8)
- plz explain why did u multiply 4/3 @sowjanya
- 9 years agoHelpfull: Yes(17) No(0)
- for 1.5 years 123
for 1 year 82
for 2 years 164
so initial amount is 750-164=586
82 is what %of 586=(82/586)*100=13.99%. - 9 years agoHelpfull: Yes(12) No(0)
- 1 1/2= 3/2
So, s.i for 3/2 years=873-750=123
S.I for 1 year = 123/(3/2)= 123*(2/3)=82
s.i for 2 years= 82*2 = 164
principal=750-164=586,
t=2,
s.i=164
Now, R= S.I.*100/(p*t)
r=100*164/(586*2)=13.99% - 8 years agoHelpfull: Yes(7) No(0)
- P + SI for 3.5 yrs = Rs 873
P + SI for 2 yrs = Rs 756
On subtracting, SI for 1.5 yrs = Rs 117
Therefore, SI for 2 yrs = Rs (117/1.5) x 2= Rs 156
So P = 756 – 156 = Rs 600
and rate = (100 x 156) / ( 600 x 2 ) = 13% per annum. - 8 years agoHelpfull: Yes(4) No(0)
- sum =600 becomes 756 in 2 years and 873 in 3.5 years if rate is 13 percent.
So the better be reviewed - 9 years agoHelpfull: Yes(3) No(0)
- And is d 600,13%
- 9 years agoHelpfull: Yes(3) No(0)
- SI FOR 2 YEARS - 2*123*2/3 = 123 *4/3 @Sravani
- 8 years agoHelpfull: Yes(1) No(0)
- the answer is best close to option C.......by hit and trial method u can simply catch the answer.....
- 8 years agoHelpfull: Yes(0) No(2)
- 750-p=p*r*2/100-->equation 1
873-p=P*r*3.5/100-->equation 2
dividing them both we get p - 8 years agoHelpfull: Yes(0) No(0)
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