Adam has some money to buy some stickers.
If he buys 3 stickers, he will have $9 left.
If he buys 5 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
= 5 - 3
= 2
To buy 2 stickers, he needs to use $9 that is left and get an extra of $5.
Difference in the amount to pay in both scenarios
= 9 + 5
= $14
Adam needs $14 to buy 2 extra stickers .
Cost of 2 stickers = $14
Cost of 1 sticker = 14 ÷ 2 = $7
(b)
Amount that he has
= Cost of 3 stickers + 9
= 3 x 7 + 9
= 21 + 9
= $30
Answer(s): (a) $7; (b) $30