GED Mathematical Reasoning TestQuantitative Problem Solving with Rational NumbersMedium
A store offers a 25% discount on all items. If a shirt originally costs $36, how much will a customer pay after the discount?
- A$25.00
- B$45.00
- C$9.00
- D$27.00
Show answer & explanationAnswer & explanation
Correct answer: D. $27.00
First, calculate the discount amount: 25% of $36 = 0.25 * $36 = $9.00. Then, subtract the discount from the original price: $36 - $9.00 = $27.00.
Why the other options are wrong
- A. This is an incorrect calculation; possibly subtracting 11 dollars.
- B. This would be the price if there was a 25% markup, not a discount.
- C. This is the discount amount, not the final price.
Calculating Discounts
To calculate a discount, first find the discount amount by multiplying the original price by the discount percentage (as a decimal). Then, subtract the discount amount from the original price to find the final price.
- Discount Amount = Original Price × Discount Rate.
- Final Price = Original Price - Discount Amount.
- Discount rates are usually given as percentages.
Memory trick: Percent off, then subtract, for the price you'll pay, don't look back.