The poster shows a lavender sale at a flower cart. Ivan needs to get at least 19 lavenders for a party. What is the smallest amount of money he will have to pay?
Number of lavenders in a set
= 4 + 1
= 5
Number of sets in 19 lavenders
= 19 ÷ 5
= 3 r 4
Number of sets needed
= 3 + 1
= 4
Smalllest amount that he will have to pay
= 4 x 5.40
= $21.60
Answer(s): $21.60