Levi wants to buy some pens of the same price. If she buys 2 pens, she will have $6.10 left. If she buys 4 pens, she will short of $2.30.
- How much does each pen cost?
- How much does Levi have?
(a)
Difference in the number of pens
= 4 - 2
= 2
Amount that Levi needs to buy 2 pens
= 6.10 + 2.30
= $8.40
Cost of each pen
= 8.40 ÷ 2
= $4.20
(b)
Amount that Levi has
= 2 x 4.20 + 6.10
= $14.50
Answer(s): (a) $4.20; (b) $14.50