The poster shows a peony sale at a flower cart. Ahmad needs to get at least 10 peonies for a party. What is the smallest amount of money he will have to pay?
Number of peonies in a set
= 3 + 1
= 4
Number of sets in 10 peonies
= 10 ÷ 4
= 2 r 2
Number of sets needed
= 2 + 1
= 3
Smalllest amount that he will have to pay
= 3 x 2.40
= $7.20
Answer(s): $7.20