Question
The simple interest on a certain sum of money for 2 l/2 years at 12% per
annum is Rs. 40 less than the simple interest on the same sum for 3 ½
years at 10% per annum. Find the sum.
The simple interest on a certain sum of money for 2 l/2 years at 12% per
annum is Rs. 40 less than the simple interest on the same sum for 3 ½
years at 10% per annum. Find the sum.
Answer: Option A
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Let the sum be Rs. x
Then, ((x*10*7)/(100*2))-( (x*12*5)/(100*2)) = 40
7x/20)-(3x/10)=40
x = (40 * 20) = 800
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