Isaiah wants to buy some markers of the same price. If she buys 4 markers, she will have $3.70 left. If she buys 9 markers, she will short of $2.30.
- How much does each marker cost?
- How much does Isaiah have?
(a)
Difference in the number of markers
= 9 - 4
= 5
Amount that Isaiah needs to buy 5 markers
= 3.70 + 2.30
= $6.00
Cost of each marker
= 6.00 ÷ 5
= $1.20
(b)
Amount that Isaiah has
= 4 x 1.20 + 3.70
= $8.50
Answer(s): (a) $1.20; (b) $8.50