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Tatiana [17]
3 years ago
9

an electronic store had a 20% off sale. If a stareo originally cost $125, how much did the stareo cost during the sale?

Mathematics
1 answer:
spayn [35]3 years ago
6 0

Answer:

100

Step-by-step explanation:

You multiply 125 by 0.80.  This is because 125 is the original amount nd to find out how much you have to pay, you would subtract 20% from 100% to get 80%.  Now, you know that you have to pay for 80% of the stereo.  In order to multiply the two numbers together, you have to convert 80% to a decimal which is 0.80.  Lastly, you multiply to get 1oo.  Therefore, the stereo costs $100.00 during the sale.

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lakkis [162]

Answer:

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Step-by-step explanation:

To solve for x, we will have to get the equation 2x + 15 = 20 into the form x = _. That will be our answer.

2x + 15 = 20

Subtract 15 from both sides to get rid of the +15 on the left side.

2x = 20 - 15

Simplify.

2x = 5

Divide both sides by 2 to get rid of the coefficient of 2 on the left side.\

x = 5/2 = 2.5

x = 5/2   or    x = 2.5

I hope you find my answer helpful. :)

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Step-by-step explanation:

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