Adam has some money to buy some stickers.
If he buys 10 stickers, he will have $19 left.
If he buys 13 stickers, he will have $10 left.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 13 - 10
= 3
Difference in the amount to pay in both scenarios
= 19 - 10
= 9
Adam needs $9 to buy 3 extra stickers.
Cost of 3 stickers = $9
Cost of 1 sticker = 9 ÷ 3 = $3
(b)
Amount that he has
= Cost of 10 stickers + 19
= 10 x 3 + 19
= 30 + 19
= $49
Answer(s): (a) $3; (b) $49