Mia wants to buy 18 identical pencils as follows.
1 for $4.805 for $22.80 What is the least amount of money she needs to buy 18 such pencils?
Maximum number of sets that Mia can buy
= 18 ÷ 5
= 3 r 3
Amount to pay for 3 sets of 5 pencils
= 3 x 22.80
= $68.40
Amount to pay for the remaining pencils not part of a set
= 3 x 4.80
= $14.40
Least amount that Mia needed to pay
= 68.40 + 14.40
= $82.80
Answer(s): $82.80