Latest Tech Mahindra Aptitude Question SOLUTION: If difference between compound interest and simple interest on a sum at 10% P.a. for 2 years is Rs.51 then sum is a) Rs.5000 b) Rs.5100 c) Rs.5800 d) Rs.6000

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If difference between compound interest and simple interest on a sum at 10% P.a. for 2 years is Rs.51 then sum is

a) Rs.5000
b) Rs.5100
c) Rs.5800
d) Rs.6000

Asked In Tech Mahindra Aashu (8 years ago)

Unsolved Read Solution (3)

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Read Solution (3) :

ANUJ KIUMAR  (8 years ago)

p(r/100)^2=C.I-S.I
P(10/100)^2=51
5100 ANS

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Manasa  (8 years ago)

FORMULA: CI------------ p[ ( (1+r/100)^t)-p ]
SI-------------ptr/100

given CI-SI=51
p[ (1+10/100)^2)-p] - p*2*10/100 = 51
p [ (11/10*11/10) -1- (1/5) ] = 51
p (0.01) = 51
p= 51/0.01
p= 5100.

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Jyoti bala  (8 years ago)

Hello everyone
from ans.we can solve this problem.
take 5100 as sum
5100*10/100=510 which is interest
and interest is for 2 years is=510+510=1020
now,for compound interst ,we have to add the interest of first year with principle to calculate the c.i for 2nd year
so 5100+510=5610
5610*10/100=561
so compound interest =510+561=1071
then.the diff between C.I and S.I is=1071-1020=51
it means our approach to solve this is right

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