Question

Steve paid 10% tax on a purchase of $40. Select the dollar amount of the tax and the total dollar amount Steve paid on the number line. Steve paid $ in taxes and $ total.

Answer 1

Find 10% of 40 to find the amount of the tax:


`\sf 40* 10\%`

Convert 10% to a decimal


`\sf 40* 0.1`

Multiply:


`\sf 4`

So the amount of the tax is $4. Just add this to the purchase amount to find the total amount he paid:


`\sf 40+4=44`

So the total amount he paid was $44.

Answer 2

Tax= $4

Total payed: $44

Explanation:

It´s very simple, you just have to calculate the tax by multiplying the cost of the purchase by the percentage, you just do a rule of thirds:

`(10)/(100) =(x)/(40)`

Now we just clear the X to solve for the value of the 10%:

`x=(40*10)/(100) \\x=(400)/(100) \\x=4`

So we know that the tax is 10% of $40 which is $4.

The total payed is calculated by adding up the cost plus the taxes:

Total payed= Cost+Taxes

Total payed= $40+$4

Total payed: $44