Adam has some money to buy some stickers.
If he buys 3 stickers, he will need $2 more.
If he buys 5 stickers, he will need $10 more.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 5 - 3
= 2
Difference in the amount to pay in both scenarios
= 10 - 2
= $8
Adam needs $8 to buy 2 extra stickers.
Cost of 2 stickers = $8
Cost of 1 sticker = 8 ÷ 2 = $4
(b)
Amount that he has
= Cost of 3 stickers - 2
= 3 x 4 - 2
= 12 - 2
= $10
Answer(s): (a) $4; (b) $10