Question

if the total cost of the power bill was $150.29 and the tax is 33% on it, what is the amount of tax?

Answer 1

Do you mean that $150.29 already includes the 33% tax?

Answer 2

yeah

Answer 3

$50 if estimated

Answer 4

I thought so, but my text book says $37

Answer 5

OK, then think of it this way.
The cost of the electricity is x.
The bill before tax was 100% the cost of the electricity. It was 100% of x.
Then you had to add the tax which is 33% of x.
Once you add them together, you have 100% x + 33% x = 133% x.
133% x = 150.29
Since percent means "divided by 100", 133% = 1.33, so
133% x = 150.29
1.33x = 150.29
Solve for x.

Answer 6

x is the amount of the cost of the electricity.
Now take 33% of x to get the amount of tax.
Once you have x, multiply x by 0.33 to get the amount of tax.

Answer 7

Also, once you have x, the cost of the electricity alone, you can subtract that from $150.29 to get the amount of the tax.

Answer 8

thanks

Answer 9

you're welcome