Adam has some money to buy some stickers.
If he buys 7 stickers, he will have $12 left.
If he buys 9 stickers, he will need $4 more.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 9 - 7
= 2
To buy 2 stickers, he needs to use $12 that is left and get an extra of $4.
Difference in the amount to pay in both scenarios
= 12 + 4
= $16
Adam needs $16 to buy 2 extra stickers .
Cost of 2 stickers = $16
Cost of 1 sticker = 16 ÷ 2 = $8
(b)
Amount that he has
= Cost of 7 stickers + 12
= 7 x 8 + 12
= 56 + 12
= $68
Answer(s): (a) $8; (b) $68