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Question

A sum of money amounts to Rs. 9800 after 5 years and Rs. 12005 after 8 years at the same rate of simple interest. The rate of interest per annum is:


Options:
A .  5%
B .  8%
C .  12%
D .  15%
Answer: Option C

S.I. for 3 years = Rs. (12005 - 9800) = Rs. 2205.

S.I. for 5 years = Rs.  A Sum Of Money Amounts To Rs. 9800 After 5 Years And Rs. 12... 2205 x 5  A Sum Of Money Amounts To Rs. 9800 After 5 Years And Rs. 12... = Rs. 3675 3

 A Sum Of Money Amounts To Rs. 9800 After 5 Years And Rs. 12... Principal = Rs. (9800 - 3675) = Rs. 6125.

Hence, rate =  A Sum Of Money Amounts To Rs. 9800 After 5 Years And Rs. 12... 100 x 3675  A Sum Of Money Amounts To Rs. 9800 After 5 Years And Rs. 12...% = 12% 6125 x 5



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