Question

The amount of sales tax varies directly with the cost of the purchase. If the sales tax is $2.40 on a purchase of $40.00, what would be the sales tax on a purchase of $60.50?

Answer 1

You can basically use a proportion:
\[\frac{ tax }{ cost }=\frac{ tax }{ cost }\]

Answer 2

Substitute the tax and the cost with the information that you already know:
\[\frac{ $2.40 }{ $40.00 } = \frac{ tax }{ $60.50 }\]

Answer 3

Think of tax as "x" and you are solving for that "x."

Answer 4

so think of tax as X?

Answer 5

I will rewrite the proportion:
\[\frac{ $2.40 }{ $40.00 }=\frac{ x }{ $60.50 }\]

Answer 6

It's the same thing, except I replaced "tax" with "x" so that I don't confuse you.

Answer 7

so x= 3.563

Answer 8

Well, I found that x=3.63

Answer 9

I think that you can recheck your work and see who is correct :)

Answer 10

Anyway, hopefully I helped you :)

Answer 11

...and you understood.