Ricky bought flowers for Susan he spent a total of $14.85 and bought 13 flowers if you knows Lillys cost $1.25 and tulips cost $.90 how many of each flower did he buy Susan

Given:

Total amount spent = $14.85

Total number of flowers = 13

The cost of a lily = $1.25

The cost of a tulip = $0.90

Let x = the number of lilies bought

Let y = the number of tulips bought

Therefore

x + y = 13 (1)

1.25x + 0.9y = 14.85 (2)

From (1),

y = 13 - x (3)

Substitute (3) into (2).

1.25x + 0.9 (13 - x) = 14.85

0.35x + 11.7 = 14.85

0.35x = 3.15

x = 9

y = 13 - x = 4

Answer:

9 lilies

4 tulips