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Triss [41]
3 years ago
10

70.2 is 78% of what number

Mathematics
2 answers:
ser-zykov [4K]3 years ago
7 0

Answer:

The answer is 90.

Step-by-step explanation:

Let the number be x.

We have been given that 78% of x is 70.2.

Mathematically, we can express this statement as :

\frac{78}{100}\times x=70.2

Now we will solve for x:

78x=70.2\times100

78x=7020

x=\frac{7020}{78}

x = 90

Hence, the number is 90.

We can also check that, 0.78\times90=70.2

So, we get the answer as 90.

Varvara68 [4.7K]3 years ago
4 0
70.2 is 78% of 90


hope this helps
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In a class of 25 students, 15 of them have a cat, 16 of them have a dog and 3 of them have neither
Sphinxa [80]

Answer:

9/25

Step-by-step explanation:

Our denominator is the total amount in class. x/25

Our numerator is the total of people are "the probability that a student chosen at random has a cat and a dog"  Which is -9.

~~~Hope this helps~~~ :)

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An electrician charges $30 for a service call plus $75 per hour of service. If he charged 210$ how many hours did he work
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Answer:

2 hours 30 minutes

Step-by-step explanation:

210 - 30 = 190

190 / 75 = 2.5

Sorry if I'm wrong.

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3 years ago
A chemical company makes two brands of antifreeze. The first brand is 65% pure antifreeze, and the second brand is 90% pure anti
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With amounts measured in gallons, let

x = amount of 65% antifreeze

y = amount of 90% antifreeze

1 gal of the 65% brand contains 0.65 gal of pure antifreeze; x gal would contain 0.65x gal. Similarly, y gal of the 90% brand contains 0.90y gal of pure antifreeze.

To obtain 120 gal of 80% antifreeze solution (which contains 0.80•120 = 96 gal of pure antifreeze), we must have

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