Question

A certain sum amounts to ₹11250 in 3 years and ₹12750 in 5 years at simple interest. Find the sum and the rate of interest per annum.
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Answer 1

Answer:

refer to attachment

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Answer 2

Answer:

Simple Interest = [{P×R×T}/100]

We can also calculate the Principal amount as P = [{100×(Simple Interest)}/(R×T)].

Similarly, we can write the time T as equal to T = [{100×(Simple Interest)}/P×R].