Question

A sum of money lent at simple interest
amounts to 17,145 in 3 years and to
19,575 in 5 years. Find the sum and the
rate of interest.​

Answer 1

Answer:

17145=P+PR3/100

19575= P+PR5/100

19575-17145=PR2/100

2430=PR/50

PR=2430×50

Put this value of PR in above equation

17145=P+2430×50×3/100

17145=P+3645

P=17145-3645=13500

Put this value of P in PR=2430×50

R=2430×50/13500=9

Ans 9%