Adam has some money to buy some stickers.
If he buys 2 stickers, he will have $18 left.
If he buys 11 stickers, he will have $9 left.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 11 - 2
= 9
Difference in the amount to pay in both scenarios
= 18 - 9
= 9
Adam needs $9 to buy 9 extra stickers.
Cost of 9 stickers = $9
Cost of 1 sticker = 9 ÷ 9 = $1
(b)
Amount that he has
= Cost of 2 stickers + 18
= 2 x 1 + 18
= 2 + 18
= $20
Answer(s): (a) $1; (b) $20