10. Jack earned $112 in 8 hours.
How much did he earn per hour?

Jack earned $14 per hour.

Step-by-step explanation:

$112 in 8 hours

So 8x = 112

To find x, 1 hour, we divide 112 by 8

8x = 112

x = 112/8

x = 14

-Chetan K

jack will earn 14$ per month

Step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

15: 24

62.5%

step-by-step explanation: