Adam has some money to buy some stickers.
If he buys 5 stickers, he will need $4 more.
If he buys 7 stickers, he will need $8 more.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 7 - 5
= 2
Difference in the amount to pay in both scenarios
= 8 - 4
= $4
Adam needs $4 to buy 2 extra stickers.
Cost of 2 stickers = $4
Cost of 1 sticker = 4 ÷ 2 = $2
(b)
Amount that he has
= Cost of 5 stickers - 4
= 5 x 2 - 4
= 10 - 4
= $6
Answer(s): (a) $2; (b) $6