Bryan has some money to buy some stickers.
If he buys 9 stickers, he will have $21 left.
If he buys 12 stickers, he will have $9 left.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 12 - 9
= 3
Difference in the amount to pay in both scenarios
= 21 - 9
= 12
Bryan needs $12 to buy 3 extra stickers.
Cost of 3 stickers = $12
Cost of 1 sticker = 12 ÷ 3 = $4
(b)
Amount that he has
= Cost of 9 stickers + 21
= 9 x 4 + 21
= 36 + 21
= $57
Answer(s): (a) $4; (b) $57