samuel earns 3$ an hour less than jack. in 6 hours samuel earns 72$. which equation can be used to find x, the amount, in dollars, jack earns in an hour

(x - 3) * 6 = 72

jack earns $ 15 an hour and samuel $12 an hour

Step-by-step explanation:

we know that samuel earns 3 dollars less than jack, let's say that "x" is what jack earns, in addition to this we know that samuel earns a total of 72 dollars in 6 hours, therefore we have to:

(x - 3) * 6 = 72

this would be the equation to determine x, we solve it:

6 * x - 18 = 72

6 * x = 72 + 18

x = 90/6

x = 15

which means that jack earns $ 15 an hour and samuel $12 an hour