Salik wants to buy some pens of the same price. If she buys 2 pens, she will have $5.50 left. If she buys 4 pens, she will short of $2.10.
- How much does each pen cost?
- How much does Salik have?
(a)
Difference in the number of pens
= 4 - 2
= 2
Amount that Salik needs to buy 2 pens
= 5.50 + 2.10
= $7.60
Cost of each pen
= 7.60 ÷ 2
= $3.80
(b)
Amount that Salik has
= 2 x 3.80 + 5.50
= $13.10
Answer(s): (a) $3.80; (b) $13.10