Zoe wants to buy some pens of the same price. If she buys 4 pens, she will have $6.20 left. If she buys 8 pens, she will short of $1.80.
- How much does each pen cost?
- How much does Zoe have?
(a)
Difference in the number of pens
= 8 - 4
= 4
Amount that Zoe needs to buy 4 pens
= 6.20 + 1.80
= $8.00
Cost of each pen
= 8.00 ÷ 4
= $2.00
(b)
Amount that Zoe has
= 4 x 2.00 + 6.20
= $14.20
Answer(s): (a) $2.00; (b) $14.20