Question

two equal sums were lent out at 7% and 5% interest respectively. The interests earned on the two loans
add up to 960rs for 4 years. What is the total sum lent out?
​

Answer 1

★SOLUTION★

Answer: Let assume 200 as principal.

Two equal part = 100 each. So in 1st case,

7% * 4 yrs = 28%

:. 100 * 28% = Rs 28.

2nd case

5% * 4 yrs = 20%

So, 100* 20% = Rs 20.

Total si on Rs. 200 is Rs 48.

But According to question SI is Rs. 960, which is 20 times extra which we get at Rs 200.

So, principal must be 200* 20 times = Rs 4000.

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