math
posted by ciara on .
The tax on a purchase was $9.33. If the sales tax rate is 6%, how much was the purchase? Write and solve an equation.

$155.5
how I found it: I tried to find what an amount for which to total amount of tax cost $9.33
so, I chose random numbers to test this,
155.5x.06=9.33 
Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown.
.06x = 9.33
x = 9.33/06 = 155.50