The poster shows a orchid sale at a flower cart. Carl needs to get at least 10 orchids for a party. What is the smallest amount of money he will have to pay?
Number of orchids in a set
= 3 + 1
= 4
Number of sets in 10 orchids
= 10 ÷ 4
= 2 r 2
Number of sets needed
= 2 + 1
= 3
Smalllest amount that he will have to pay
= 3 x 2.80
= $8.40
Answer(s): $8.40