Question

Sarah bought a bike that cost $260. She had a coupon that was worth $55 off the cost of any bike. Use the expression 260 + (−55) to find how much Sarah paid for her bike.

Answer 1

$205

Explanation:

The cost of bike Sarah bought = $260

Discount coupon = $55

The cost Sarah paid for the bike =$260 - $55

Use the expression 260 + (- 55) to find how much Sarah paid for her bike:

`260+(-55)\\ \\=200+60+(-55)\\ \\=200+5+55+(-55)\ [\text{Note} 55+(-55)=0]\\ \\=200+5\\ \\=205`

So, Sarah paid $205 for the bike.