Adam has some money to buy some stickers.
If he buys 7 stickers, he will have $15 left.
If he buys 11 stickers, he will have $7 left.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 11 - 7
= 4
Difference in the amount to pay in both scenarios
= 15 - 7
= 8
Adam needs $8 to buy 4 extra stickers.
Cost of 4 stickers = $8
Cost of 1 sticker = 8 ÷ 4 = $2
(b)
Amount that he has
= Cost of 7 stickers + 15
= 7 x 2 + 15
= 14 + 15
= $29
Answer(s): (a) $2; (b) $29