What is the cost of one daylily and the cost of one pot of ivy?

Question

Mofor and Jasmine each improved their yards by planting day lilies and ivy. They bought their supplies from the same store. Mofor spent $100 on 7 day lilies and 6 pots of ivy. Jasmine spent $40 on 4 daylilies and 2 pots of ivy. What is the cost of one daylily and the cost of one pot of ivy?

A) daylily: $3, pot of ivy: $17

B) daylily: $12, pot of ivy: $4

C) daylily: $5, pot of ivy: $11

D) day lily: $4, pot of ivy: $12

Answer 1

D = Day lily

I = Ivy

Mofor

100 = 7D + 6I

Jasmine

40 = 4D + 2I

100 = 7D + 6I

40 x (-3) = (-3) (4D + 2I)

100 = 7D + 6I

-120 = -12D - 6I

-20 = -5D

D = 4

100 = (7)(4) + 6I

100 - 28 = 6I

72 = 6I

I = 12

Day Lily = $4

Ivy = $12

Good luck!