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
To find the number of dollars each shirt cost, we need to subtract the cost of the hat from the total cost and then divide the result by the number of shirts.
Since Alex bought 4 shirts for d dollars each and a hat for $12, the equation that can be used to find d is:
(72 - 12) / 4 = d
This simplifies to:
60 / 4 = d
Hence, the correct equation is:
b. 72 - 12 divided by 4 = d
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