Adam has some money to buy some stickers.
If he buys 9 stickers, he will have $17 left.
If he buys 11 stickers, he will have $15 left.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 11 - 9
= 2
Difference in the amount to pay in both scenarios
= 17 - 15
= 2
Adam needs $2 to buy 2 extra stickers.
Cost of 2 stickers = $2
Cost of 1 sticker = 2 ÷ 2 = $1
(b)
Amount that he has
= Cost of 9 stickers + 17
= 9 x 1 + 17
= 9 + 17
= $26
Answer(s): (a) $1; (b) $26