Tommy wants to buy some notebooks of the same price. If she buys 3 notebooks, she will have $6.80 left. If she buys 5 notebooks, she will short of $2.80.
- How much does each notebook cost?
- How much does Tommy have?
(a)
Difference in the number of notebooks
= 5 - 3
= 2
Amount that Tommy needs to buy 2 notebooks
= 6.80 + 2.80
= $9.60
Cost of each notebook
= 9.60 ÷ 2
= $4.80
(b)
Amount that Tommy has
= 3 x 4.80 + 6.80
= $21.20
Answer(s): (a) $4.80; (b) $21.20