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?

10

Step-by-step 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

the ratio of grapes to blueberries she should use is 12: 3

step-by-step explanation:

if mandie is making 15 cups of fruit salad, the ratio of grapes to blueberries she should use is 12: 3.

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x