Question

Sales tax on an item is directly proportional to the cost of the item purchased. If the tax on a $600 item is $42, what is the sales tax on a $930 item?

Answer 1

Answer: $65.10

Step-by-step work:

1.Set the ratio

`(600)/(42) = (930)/(x)`
2.Cross-multiply

`600x = 930(42)`

`600x = 39060`
3.Divide to single out x

`600x / 600 = 39060 / 600`

`x = 65.10`