Adam has some money to buy some stickers.
If he buys 4 stickers, he will need $2 more.
If he buys 9 stickers, he will need $7 more.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 9 - 4
= 5
Difference in the amount to pay in both scenarios
= 7 - 2
= $5
Adam needs $5 to buy 5 extra stickers.
Cost of 5 stickers = $5
Cost of 1 sticker = 5 ÷ 5 = $1
(b)
Amount that he has
= Cost of 4 stickers - 2
= 4 x 1 - 2
= 4 - 2
= $2
Answer(s): (a) $1; (b) $2