Question
What sum of money must be given at simple interest for 3
months at 5% per annum in order to earn Rs. 220 interest?Solution
Let the sum of money be Rs. P. SI = Rs. 220, T = 1/4 year and R = 5% SI = (P × R × T)/100 ⇒ 220 = P × (5/100) × (1/4) ⇒  P = Rs. 17600
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