Alex bought 4 shirts for d dollars each and a hat for $12. The cost of these items was $72.

Which equation can be used to find d, the number of dollars each shirt cost?
a. 72 divided by 4 divided by 12 = d.
b. 72 - 12 divided by 4 = d
c. 72 + 12 divided by 4 = d
d. not here

1 answer

b. 72 - 12 divided by 4 = d is the equation that can be used to find d, the number of dollars each shirt cost.

Explanation:

The cost of 4 shirts is 4d dollars.

The total cost of 4 shirts and a hat is $72, so we can write:

4d + $12 = $72

Subtracting $12 from both sides, we get:

4d = $60

Dividing both sides by 4, we get:

d = $15

Therefore, each shirt costs $15.

So, the equation to find d is:

4d = 72 - 12

Dividing by 4, we get:

d = (72 - 12)/4

Simplifying, we get:

d = 60/4 = $15