If a sum doubles itself in 5 years on simple interest. In how many years will the sum becomes its five times?
Answer & explanation
Correct answer: option 2
According to the question,
2 times of principle means double of principle or we can say if principle is 1 then interest will also be 1.
So, 1 interest in = 5 years.
4 interest will be in = 20 years.