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sertanlavr [38]
3 years ago
15

25 is what percent of 20?

Mathematics
2 answers:
denis-greek [22]3 years ago
8 0

Answer:

20 is 80% of 25

Step-by-step explanation:

We assume, that the number 25 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 100% equals 25, so we can write it down as 100%=25.

4. We know, that x% equals 20 of the output value, so we can write it down as x%=20.

5. Now we have two simple equations:

1) 100%=25

2) x%=20

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=25/20

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 20 is what percent of 25

100%/x%=25/20

(100/x)*x=(25/20)*x       - we multiply both sides of the equation by x

100=1.25*x       - we divide both sides of the equation by (1.25) to get x

100/1.25=x

80=x

x=80

Over [174]3 years ago
5 0

Answer:

125 %

Step-by-step explanation:

You first divide 25 by 20. This will give you 1.25

Then, you multiply by 100 to get a percentage.

You can use this formula for calculating a percentage of any number.

Divide the portion you have by the whole (Ex: 3 out of 5 would be 3 divided by 5) and then multiply by 100.

Hope this helps!

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<u>Step-by-step explanation:</u>

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Based on the information I provided above, the answers are:

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b) If C(x) = 87, then 2.0 < x ≤ 3.0

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