The cost of an article including 15% for taxes is $138.00. What is the cost of the article without tax?

Question

i want to know how to do? ( the fromula) please

Answer 1

cost of article: x = 100%
cost of article including 15% taxes: x + 15% = 100 + 15 = 115%

if 115% = $138.00
therefore 100% = (100*138)/115 = $120

so cost of article without tax: $120.00

Answer 2

Let x be the cost of the article without tax.

So, the tax over the article is 15 % * x = (15 / 100 ) = 0.15 x

Given that the cost of the article with 15% tax is $138.

Therefore,

The cost of the article with tax is,

( Cost without tax ) + ( Tax ) = $ 138

x + ( 0.15 ) x = 138

x ( 1 + 0.15 ) = 138

1.15 x = 138

x = (138) / (1.15 )

= 120

That is,

The cost of the article without tax is $120.

And the tax = $ 18.

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Answer 3

Let x be the cost of the article without tax.

Adding 15% tax is same as multiplying x by 1.15

So, 1.15x = 138

x = 138/1.15 = 120

We can verify this by calculating 15% of 120 and adding to it.

120 x 15/100 = 18 dollars.

Adding it, we get 138 dollars which is the given value.

So, the cost of the article without tax is $120

Answer 4

1.15x = 138
x = 138 / 1.15
x = 120


x is the cost before the tax.
Since there's a 15% tax, you add 0.15 times the total cost of x to the original cost, so 1x + 0.15x = 1.15x
The problem states that the price with the tax (1.15x) is equal to 138. Set the two equal and solve for x.

Answer 5

It is 138=x+(.15x). x= Original cost. The .15x is 15% of the original 138=1.15x Divide by 1.15 x=120.

Answer 6

$138 Total cost with 15% for taxes

$138 x .15= 20.70

Before the 15% tax the coat costs $138- $20.70=$117.30

Answer 7

So 115% = $138.00

So 100% = $138.00 / 115 = $120.00

Answer 8

Come on dude, this is really easy. Pay attention in class.

$138/1.15 = $120. $120 x 1.15 = $138

Answer 9

x = price w/o tax
r = tax
t = price w/ tax
x * r = t
x * 1.15 = 138.00
x = 138 / 1.15
x = 120