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gladu [14]
3 years ago
13

Selina bought a shirt on sale that was 20% less than the original price. The original price was 5 more than the sale price. What

was the original price? Explain or show work.
Mathematics
1 answer:
earnstyle [38]3 years ago
8 0
Let us assume the original price of the shirt = x
Let us assume the sale price of the shirt = y
20x/100 = y
x/5 = y
x = 5y
Now the second equation that we get is
x = y + 5
5y - y = 5
4y = 5
y = 5/4
Now putting the value of y in the first equation we get
x = 5y
  = 5 (5/4)
  = 25/4
  = 6 1/4
Then we can say that the original price of the shirt was 6 1/4. The main trick of this problem lies in the words that have been used in the question. It is important to understand the question first before starting to solve the problem.
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We are given the equation:
F = 2.25+0.2(m-1)
where:
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In question 7, we are given that the fare (F) is equal to $6.05 and we need to get the number of miles. To do so, we will simply substitute with the fare in the given equation and solve for the number of miles (m) as follows:
F = 2.25 + 0.2(m-1)
6.05 = 2.25 + 0.2(m-1)
6.05-2.25 = 0.2(m-1)
3.8 = 0.2(m-1)
3.8/0.2 = m-1
19 = m-1
m = 19+1
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3 years ago
Did I do this right? If not please explain!
andrew11 [14]
Yep! Good job, you did it correctly.
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tresset_1 [31]

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Step-by-step explanation:

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Step-by-step explanation:

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