Question

Rs. $500$ was invested at $12$% per annum simple interest and a certain sum of money invested at $10$% per annum simple interest. If the sum of the interests on both the sums after $4$ years is Rs. $480$, the latter sum of money is ?

• A. Rs. $450$
• B. Rs. $750$
• C. Rs. $600$
• D. Rs. $550$
• E. None of these

Answer 1

Answer: (C)

Rs. $600$

Total Interest = Rs. 480
First Capital = Rs. 500
Rate = 12%
Time = 4 years
Interest$=\frac{PTR}{100}=\frac{500\times 4\times 12}{100}=Rs.240$
Interest on second sum$=480-240=Rs.240$
Time = 4 years
Rate = 10%
Second sum $=\frac{240\times 100}{4\times 10}=Rs.600$