Question

Richard, Henry and Gavin share some sweets in the ratio 3:3:5. Richard gets 15 sweets. How many more sweets does Gavin get over Henry?

Answer 1

10

Explanation:

Richard gets 15 sweets which is 3 parts of the ratio.

Dividing 15 by 3 gives the value of one part of the ratio

15 ÷ 3 = 5 sweets ← value of 1 part of the ratio, thus

3 × 5 = 15 ← number of sweets Henry gets

5 × 5 = 25 ← number of sweets Gavin gets

Thus

25 - 15 = 10 sweets which is how many Gavin gets over Henry