A cookbook cost 3 times as a storybook. A cookbook and 4 storybook cost $112. How much did a storybook cost?

1c+4s=112

1c=3s

3s+4s=112

7s=112

Storybook = $16

Cost of storybook is $16

Step-by-step explanation:

Let's assume that the Cost of storybook = 'x'

If the cost of the cookbook is 3 times the cost of storybook then the cost of the cookbook will be '3x'

The cost of 1 cookbook and 4 storybooks = $112

The cost of cookbook and storybook can be calculated by the equation:

3x+4x=112

7x=112

Divide both sides by 7 to isolate x:

7x/7=112/7

x=16

Therefore, the cost of storybook is $16