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saveliy_v [14]
3 years ago
5

A school has 20% of girls and 160 boys, how many kids are in the school?

Mathematics
1 answer:
ioda3 years ago
8 0

Answer:

200

Step-by-step explanation:

20%=girls

=100%-20%

80%=boys

80%/100×y=160

=160÷80%/100

=160×100/80

=200

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Step-by-step explanation:

You just need to know if two terms have the same variable they can be added or subtracted.  But if it is say x and x^2 it cannot, they need to be brought to the same power as well.  or if there is a term with xy, it can only be added and subtracted to other xy terms

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3 years ago
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3 0
3 years ago
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soldi70 [24.7K]
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8 0
3 years ago
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Korvikt [17]

Answer:

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Explanation:

First, we need to find 70% of the original price of $30 using the following equation:

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Therefore, the answer is $9

6 0
1 year ago
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