## Solution

Amber bought a helmet for \$40.
Ike bought gloves and front lights for a total of \$40.50.
Tiffany bought front lights and a saddlebag for \$46.50.

## Explanation

### Step 1

Find the sale price of each item.

Item Original Price Percent Discount Discount Amount Sale Price
Helmet \$50.00 20% \$10.00 \$40.00
Biking gloves \$20.00 10% \$2.00 \$18.00
Front lights \$25.00 10% \$2.50 \$22.50
Rear saddlebag \$30.00 20% \$6.00 \$24.00

### Step 2 Guess and Check

Amber's one item cost about the same amount as the two items that Ike bought. Amber probably bought the most expensive item—the helmet, for \$40.00.

If Amber bought the helmet and Ike spent \$0.50 more than she did, Ike's two items must have cost \$40.50.

One of Ike's items must have been the front lights, since the lights are the only item whose price includes \$0.50.

To find the other item Ike bought, subtract the cost of the lights, \$22.50, from the total amount he spent, \$40.50.
\$40.50
–22.50
\$18.00

Ike's second item must have been biking gloves.

Since Tiffany got \$3.50 back from \$50.00, her two items cost a total of \$46.50. She must have bought front lights, since they are the only item in which the price includes \$0.50.

To find the other item Tiffany bought, subtract the cost of the lights, \$22.50, from the total amount that she spent, \$46.50.
\$46.50
–22.50
\$24.00

Tiffany's second item must have been the rear saddlebag.

### Step 3

Find the cost of each purchase.

Name Items and Cost of Each Total
Amber Helmet for \$40 \$40.00
Ike Biking gloves for \$18.00
Front lights for \$22.50
\$40.50
Tiffany Front lights for \$22.50