If you can't explain a concept simply, you don't understand it well enough — yet.

Simple and compound interest — quick quiz

5 SSC Selection Post-pattern questions on Simple and compound interest. Instant scoring and solutions — see where you stand in a few minutes.

Question 1 of 5

Hard

A sum of money doubles itself in 4 years at simple interest. In how many years will it become four times itself at the same rate of interest?