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likoan [24]
3 years ago
12

A store has 40 percent off sale on headphones with this discounted price of one pair of headphones is 36 dollars, what is the or

iginal price of pair of headphones?
Mathematics
1 answer:
EleoNora [17]3 years ago
6 0
Since there is a 40% discount, this means that they subtracted 40% of the original price from the original price, meaning that $36 is 60% of the original price. We can use ratios to figure out the original price (so 100% of the price).

100% x
60% 36

x = 36*100 / 60 = 3600 / 60 = 360 / 6 = 60

We can check this quickly: 60 * 0.4 (or 40%) is 24. If we subtract 60-24 we get 36, so we did the problem correctly
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Susan is looking to hire a cleaning company to clean her house every week. One cleaning company's cost can be calculated by the
kirill [66]

Answer:

<h3>A. 1 hour</h3>

Step-by-step explanation:

If one cleaning company's cost can be calculated by the expression 75 + 50x, where x is the amount of hours they spend cleaning and another cleaning company's cost can be calculated using the expression 50 + 75x, then to calculate how long each company will have to clean to cost the same amount, we will equate both expression of the company cost and solve for x as shown;

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3 0
3 years ago
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Mama L [17]

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5 0
3 years ago
A textbook store sold a combined total of 260 chemistry and physics textbooks in a week. The number of chemistry books sold was
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Let:

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Let:

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Replace (2) into (1):

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Replace the value of y into (2):

\begin{gathered} x=3(65) \\ x=195 \end{gathered}

5 0
1 year ago
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