The original price of a jacket for sale at a department store is $80. The store is having a 20%-off sale, and you have a coupon that gives you an additional discount of 10% off the lowest sale price. How would you calculate the final selling price of the jacket?
Answer
A
Multiply the $80 original price by 0.2 and subtract the result from $80. Then multiply the new price by 0.1 and subtract the result from the discounted price.
B
Multiply the $80 price by 0.3.
C
Multiply the $80 price by 0.8, and then multiply the $80 price by 0.9.
D
Divide the $80 price by 0.8, and then divide the $80 price by 0.9.
Explanation
First calculate the 20% sale discount: 0.20 × $80 = $16, so the sale price is $80 − $16 = $64. Then apply the additional 10% coupon to that sale price: 0.10 × $64 = $6.40, leaving a final price of $57.60. Choice A describes applying each discount in sequence; the discounts are not simply added together.
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