Question

hey guys please help me I want to get an answer for the question in mathematics a sum amount to rupees 560 in 3 years and rupees 600 in 5 years what is the amount of the principal and the rate of simple interest please try to do it and please give me the answers to verify my answer wheter correct or wrong for percentage and principal 500 rupees

Answer 1

$amount\: for \: 3 \: years \: = 560 \\ amount \: for \: 5 \: years \: = 600 \\ interest \: for \: 2 \: years \: = 40 \\ interest \: for \: 3 \: years \: = 60 \\ principal \: = 560 - 60 \: = \: 500 \\ rate \: of \: interest \: = \frac{60 \times 100}{500 \times 3} = 4\%$