Question

A certain sum of money doubles itself in 10 years. Find the rate of simple interest.​

Answer 1

Answer:

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Step-by-step explanation:

So rate per annum = 10%. Hope my answer helps you .

Answer 2

Answer:

Rate is 20%

Step-by-step explanation:

tale principal as x

amount as 2x

then use the method of simple interest you will get the answer.