Finding an Original Amount

Question 1

What errors did Tara make in her diagram? Check all that apply.

Revolt · Accepted Answer

The 25 should be for each percent, not dollar amounts.; There should be 4 columns of 25% that each equal $20.

Question 2

Cameras R Us has a sale for 25% off camera bags, which is a discount of $20. Explain how you can set up a diagram to find the original cost of the camera bag. Indicate the number of columns necessary to fit the situation.

Revolt · Accepted Answer

Answer

Question 3

Which situation(s) could be solved using this equation? Check all that apply.

Revolt · Accepted Answer

A commission of $48 was earned on the sale of a camera. If a 30% commission rate is given, what was the price of the camera sold?; A camera was on sale for 30% off, and the discount was $48. What was the original price of the camera?; The markup on a camera was $48 at a rate of 30%. What was the wholesale price of the camera?

Question 4

$87.50$56.25$31.50$11.25

Revolt · Accepted Answer

$87.50

Question 5

The amount of tax for each camera is $5.25 and the tax rate is 6%. Explain how the equation: (Original Cost)(Percent) = Tax Amountis adjusted to solve for the original cost.

Revolt · Accepted Answer

Divide both sides of the equation by 0.06 (the decimal form of 6%) to isolate the original cost. The original cost is $5.25 ÷ 0.06 = $87.50.

Question 6

What was included in your response?

Revolt · Accepted Answer

Original Cost = 5.25/0.06

Question 7

$45$50$55$60

Revolt · Accepted Answer

$55

Question 8

A different camera is selling for $7.50 off the regular price. It was discounted 15%. What was the original price of the camera?

Revolt · Accepted Answer

$50.00

Question 9

Explain the error(s) in the student’s work.

Revolt · Accepted Answer

The student should have written 15% as the decimal 0.15 and divided the $7.50 markdown by 0.15 to find the original price.

Question 10

An employee earns a 12% commission rate on the cameras he sells. If he earns $384 in commission, what were his total sales?

Revolt · Accepted Answer

$3,200

Finding an Original Amount Answers

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