Question

Find each unit price. Which is the better buy? Explain.

Electrical wire: $1.49 for 3 ft.
$.69 for 18 in

Answer 1

please help !!

Answer 2

I'm waiting!!

Answer 3

1.49/3 = x/1
cross multiply
3x = 1.49
x = 1.49/3
x = 0.496 (rounds to 50 cents per foot)

.69/18 = x/1
cross multiply
18x = .69
x = .69/18
x = .038 per inch
12 inches in a foot
x = .038(12) = 0.456 (rounds to 46 cents per foot)

better deal is the 2nd one

Answer 4

thanks

Answer 5

no problem :)