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

Ratio, proportion and averages — quick quiz

5 RPF Constable-pattern questions on Ratio, proportion and averages. Instant scoring and solutions — see where you stand in a few minutes.

Question 1 of 5

Medium

The average weight of 15 students is 50 kg. If the teacher's weight is included, the average increases by 1.5 kg. What is the weight of the teacher?