Adam has some money to buy some stickers.
If he buys 7 stickers, he will have $6 left.
If he buys 12 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
= 12 - 7
= 5
To buy 5 stickers, he needs to use $6 that is left and get an extra of $9.
Difference in the amount to pay in both scenarios
= 6 + 9
= $15
Adam needs $15 to buy 5 extra stickers .
Cost of 5 stickers = $15
Cost of 1 sticker = 15 ÷ 5 = $3
(b)
Amount that he has
= Cost of 7 stickers + 6
= 7 x 3 + 6
= 21 + 6
= $27
Answer(s): (a) $3; (b) $27