Wyatt wants to buy 19 identical notebooks as follows.
1 for $4.905 for $20.50 What is the least amount of money she needs to buy 19 such notebooks?
Maximum number of sets that Wyatt can buy
= 19 ÷ 5
= 3 r 4
Amount to pay for 3 sets of 5 notebooks
= 3 x 20.50
= $61.50
Amount to pay for the remaining notebooks not part of a set
= 4 x 4.90
= $19.60
Least amount that Wyatt needed to pay
= 61.50 + 19.60
= $81.10
Answer(s): $81.10