Adam has some money to buy some stickers.
If he buys 9 stickers, he will have $20 left.
If he buys 15 stickers, he will have $8 left.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 15 - 9
= 6
Difference in the amount to pay in both scenarios
= 20 - 8
= 12
Adam needs $12 to buy 6 extra stickers.
Cost of 6 stickers = $12
Cost of 1 sticker = 12 ÷ 6 = $2
(b)
Amount that he has
= Cost of 9 stickers + 20
= 9 x 2 + 20
= 18 + 20
= $38
Answer(s): (a) $2; (b) $38