Charlie has some money to buy some stickers.
If he buys 10 stickers, he will have $18 left.
If he buys 18 stickers, he will have $10 left.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 18 - 10
= 8
Difference in the amount to pay in both scenarios
= 18 - 10
= 8
Charlie needs $8 to buy 8 extra stickers.
Cost of 8 stickers = $8
Cost of 1 sticker = 8 ÷ 8 = $1
(b)
Amount that he has
= Cost of 10 stickers + 18
= 10 x 1 + 18
= 10 + 18
= $28
Answer(s): (a) $1; (b) $28