Owen wants to buy some markers of the same price. If she buys 3 markers, she will have $3.90 left. If she buys 7 markers, she will short of $1.70.
- How much does each marker cost?
- How much does Owen have?
(a)
Difference in the number of markers
= 7 - 3
= 4
Amount that Owen needs to buy 4 markers
= 3.90 + 1.70
= $5.60
Cost of each marker
= 5.60 ÷ 4
= $1.40
(b)
Amount that Owen has
= 3 x 1.40 + 3.90
= $8.10
Answer(s): (a) $1.40; (b) $8.10