Elizabeth wants to buy 13 identical pens as follows.
1 for $4.706 for $23.90 What is the least amount of money she needs to buy 13 such pens?
Maximum number of sets that Elizabeth can buy
= 13 ÷ 6
= 2 r 1
Amount to pay for 2 sets of 6 pens
= 2 x 23.90
= $47.80
Amount to pay for the remaining pens not part of a set
= 1 x 4.70
= $4.70
Least amount that Elizabeth needed to pay
= 47.80 + 4.70
= $52.50
Answer(s): $52.50