Question
A certain amount of money at simple interest amounts to
₹1,404 in 2 years and to ₹1,560 in 5 years. What is the rate of simple interest per annum and principal?Solution
Simple interest amounts in 2 years=1404 Simple interest amounts in5 years=1560 ATQ- 2years=1404 … (1) 5years=1560 … (2) Solving (2)-(1) 3=156 1=52 For equation (2) Rate of interest in 5years= (52×5)/ (1560-52×5) = (260/1300) ×100 =20% Rate of interest per annum=20/5=4% P=1404-104=1300rs.
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