Adam has some money to buy some stickers.
If he buys 4 stickers, he will have $7 left.
If he buys 10 stickers, he will need $5 more.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 10 - 4
= 6
To buy 6 stickers, he needs to use $7 that is left and get an extra of $5.
Difference in the amount to pay in both scenarios
= 7 + 5
= $12
Adam needs $12 to buy 6 extra stickers .
Cost of 6 stickers = $12
Cost of 1 sticker = 12 ÷ 6 = $2
(b)
Amount that he has
= Cost of 4 stickers + 7
= 4 x 2 + 7
= 8 + 7
= $15
Answer(s): (a) $2; (b) $15