Adam has some money to buy some stickers.
If he buys 9 stickers, he will have $16 left.
If he buys 16 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
= 16 - 9
= 7
Difference in the amount to pay in both scenarios
= 16 - 9
= 7
Adam needs $7 to buy 7 extra stickers.
Cost of 7 stickers = $7
Cost of 1 sticker = 7 ÷ 7 = $1
(b)
Amount that he has
= Cost of 9 stickers + 16
= 9 x 1 + 16
= 9 + 16
= $25
Answer(s): (a) $1; (b) $25