Adam has some money to buy some stickers.
If he buys 5 stickers, he will have $5 left.
If he buys 10 stickers, he will need $10 more.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 10 - 5
= 5
To buy 5 stickers, he needs to use $5 that is left and get an extra of $10.
Difference in the amount to pay in both scenarios
= 5 + 10
= $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 5 stickers + 5
= 5 x 3 + 5
= 15 + 5
= $20
Answer(s): (a) $3; (b) $20