Adam has some money to buy some stickers.
If he buys 3 stickers, he will need $4 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 - 4
= $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 3 stickers - 4
= 3 x 3 - 4
= 9 - 4
= $5
Answer(s): (a) $3; (b) $5