Adam has some money to buy some stickers.
If he buys 5 stickers, he will have $15 left.
If he buys 7 stickers, he will need $9 more.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 7 - 5
= 2
To buy 2 stickers, he needs to use $15 that is left and get an extra of $9.
Difference in the amount to pay in both scenarios
= 15 + 9
= $24
Adam needs $24 to buy 2 extra stickers .
Cost of 2 stickers = $24
Cost of 1 sticker = 24 ÷ 2 = $12
(b)
Amount that he has
= Cost of 5 stickers + 15
= 5 x 12 + 15
= 60 + 15
= $75
Answer(s): (a) $12; (b) $75