1.

A certain sum is invested for a certain time. It amounts to Rs 400 if the rate is 6% per annum. But when invested at a rate of 2% per annum, it amounts to Rs 250. What is the sum ?

Answer»

Rs. 175



A1 = 400;
A2 = 250
n = 6;
 R2 = 2
Sum = A2r1 - A1r2/r1 - r2 = 1500-800/6-2 = 700/4 = 175



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