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Different camera is selling for $7.50 off the regular price. It was marked down 15%. A student used the equation:

15(7.5) = Original price
and found the regular price of the camera to be $112.50.
Explain the error(s) in the student’s work.

User Jounathaen
by
8.4k points

2 Answers

5 votes

Answer:

Sample Response: The student should have divided the discounted amount by the percent. The percent should have been written as a decimal.

Explanation:

Include in your response:

The tax rate should be written as the decimal 0.15 in the equation.

The original price and the 7.5 are reversed in the equation.

The equation should be (Original Price)(0.15) = 7.5.

Divide the 7.5 by 0.15

edge 2023 proof ↓

Different camera is selling for $7.50 off the regular price. It was marked down 15%. A-example-1
User Akhtarvahid
by
8.2k points
3 votes

Answer: the actual price is $8.625

Step-by-step explanation: the student multiplied 15x7.5 which gave him 112.50 when he should have done 15/100 = 0.15 x 7.50 = 1.125 +7.50= 8.625

User Roman Rabinovich
by
8.2k points

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