Hazel wants to buy 18 identical notebooks as follows.
1 for $4.705 for $22.10 What is the least amount of money she needs to buy 18 such notebooks?
Maximum number of sets that Hazel can buy
= 18 ÷ 5
= 3 r 3
Amount to pay for 3 sets of 5 notebooks
= 3 x 22.10
= $66.30
Amount to pay for the remaining notebooks not part of a set
= 3 x 4.70
= $14.10
Least amount that Hazel needed to pay
= 66.30 + 14.10
= $80.40
Answer(s): $80.40