Question

Ben went to a flower shop and saw that 12 roses cost $18.96. To determine

how much 5 roses would cost, Ben wrote the proportion below. Explain
why this proportion is incorrect. Then, write and solve a correct
proportion. *
12
18.96
5

Answer 1

12 roses/18.86

12/18.96=5

this proportion is incorrect since the other side just says 5 and it needs to be in fraction form and have a variable as the numerator/denominator.

12/18.96=5/x

cross multiply

12x=18.96*5

12x=94.8

/12 both sides

x=7.9

$7.90

Answer 2

18.96 / 12 = 1.58

1.58 = the cost of 1 rose

1.58 X 5 = $7.9