Adam has some money to buy some stickers.
If he buys 9 stickers, he will have $15 left.
If he buys 11 stickers, he will have $5 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
= 15 - 5
= 10
Adam needs $10 to buy 2 extra stickers.
Cost of 2 stickers = $10
Cost of 1 sticker = 10 ÷ 2 = $5
(b)
Amount that he has
= Cost of 9 stickers + 15
= 9 x 5 + 15
= 45 + 15
= $60
Answer(s): (a) $5; (b) $60