Question

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

Answer 1

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