Adam has some money to buy some stickers.
If he buys 4 stickers, he will have $9 left.
If he buys 6 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
= 6 - 4
= 2
To buy 2 stickers, he needs to use $9 that is left and get an extra of $9.
Difference in the amount to pay in both scenarios
= 9 + 9
= $18
Adam needs $18 to buy 2 extra stickers .
Cost of 2 stickers = $18
Cost of 1 sticker = 18 ÷ 2 = $9
(b)
Amount that he has
= Cost of 4 stickers + 9
= 4 x 9 + 9
= 36 + 9
= $45
Answer(s): (a) $9; (b) $45