Charlotte wants to buy some pens of the same price. If she buys 3 pens, she will have $7.60 left. If she buys 5 pens, she will short of $2.30.
- How much does each pen cost?
- How much does Charlotte have?
(a)
Difference in the number of pens
= 5 - 3
= 2
Amount that Charlotte needs to buy 2 pens
= 7.60 + 2.30
= $9.90
Cost of each pen
= 9.90 ÷ 2
= $4.95
(b)
Amount that Charlotte has
= 3 x 4.95 + 7.60
= $22.45
Answer(s): (a) $4.95; (b) $22.45