Mr. Valenzuela’s new bottle of shampoo contains 60 ounces of shampoo. He uses 1 fourth ounce of shampoo each time he washes his hair. Which equation can be used to find x , the number of washes after which 24 ounces will remain in the bottle?
Answer
A
1 fourth x minus 60 is equal to 24
B
1 fourth x minus 24 is equal to 60
C
60 minus 1 fourth x is equal to 24
D
24 minus 1 fourth x is equal to 60
Explanation
Each wash uses 1/4 ounce, so after x washes he will have used (1/4)x ounces. Subtract that amount from the bottle’s starting 60 ounces and set the result equal to the 24 ounces remaining: 60 − (1/4)x = 24. This is choice D.
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