Question

The compound interest on a sum of money for 2 years is Rs. 832 and he simple interest on he same sum for the same period is Rs. 800. The difference between the compound interest and the simple interest for 3 years will be :


Options:
A .  Rs. 48
B .  Rs. 66.56
C .  RS. 98,.56
D .  None of these
Answer: Option C

Difference in C.I.  and S.I.  for 2 years = Rs. 32

S.I.  for one years = Rs. 400

`:.`    S.I.  on Rs. 400 for one year =   Rs.  32

So, Rate = ` ((100 xx 32)/(400 xx 1))`% =  8%

Hence , difference in C.I. and S.I. for  3rd year

= S.I. on Rs. 832 =  Rs. `((832 xx 8 xx 1)/(100))` = Rs. 66.56.

Total difference = Rs. (32 + 66.56) = Rs. 98.56




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