Raeann wants to buy 20 identical pencils as follows.
1 for $4.206 for $22.40 What is the least amount of money she needs to buy 20 such pencils?
Maximum number of sets that Raeann can buy
= 20 ÷ 6
= 3 r 2
Amount to pay for 3 sets of 6 pencils
= 3 x 22.40
= $67.20
Amount to pay for the remaining pencils not part of a set
= 2 x 4.20
= $8.40
Least amount that Raeann needed to pay
= 67.20 + 8.40
= $75.60
Answer(s): $75.60