Adam has some money to buy some stickers.
If he buys 8 stickers, he will need $3 more.
If he buys 10 stickers, he will need $9 more.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 10 - 8
= 2
Difference in the amount to pay in both scenarios
= 9 - 3
= $6
Adam needs $6 to buy 2 extra stickers.
Cost of 2 stickers = $6
Cost of 1 sticker = 6 ÷ 2 = $3
(b)
Amount that he has
= Cost of 8 stickers - 3
= 8 x 3 - 3
= 24 - 3
= $21
Answer(s): (a) $3; (b) $21