Question

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Jenae goes to the mall to buy a jacket. A store is having a sale for 30% off the original price of the jacket. Jenae also has a $10 off coupon she will use to make the purchase. The expression below can be used to find her final price for a jacket with an original price of p dollars.

0.7p - 10

The jacket she decides to purchase has an original price of p=$87.99. What is the final price of the jacket Jenae is buying?

Answer 1

$51.60

Explanation:

• This is essentially substitution
• I have found that shops tend to round up the .99, so I will work with $88
• 0.7 × 88 - 10 = $61.60 - 10 = $51.60