Question

if the interest on 3000 rupees is 600 rupees at a certain rate for a certain number of years , what would the interest be on 1500 rupees under the same condition
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Answer 1

Let, Rate = R%

Time = t years

So,

(3000×R×t) ÷ 100 = 600

=>30×R×t = 600

=> R×t = 20

Now,

Interest on ₹1500

=>(1500×R×t) ÷ 100

=>(1500×20) ÷ 100 (Because, R×t = 20)

=> 300

Therefore,

Required Interest = ₹300

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