Charlie has some money to buy 7 stickers
but he buys only 3 stickers and has $20 left.
- How much does each sticker cost?
- How much money does he have?
(a)
Number of stickers that Charlie has not bought
= 7 - 3
= 4
Cost of 4 stickers = $20
Cost of 1 sticker = 20 ÷ 4 = $5
(b)
Amount that Charlie has
= Cost of 7 stickers
= 7 x 5
= $35
Answer(s): (a) $5; (b) $35