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kumpel [21]
3 years ago
8

If there are 40% girls in a class .if there are 35 girls in a class ,find the number of boys

Mathematics
2 answers:
Aliun [14]3 years ago
8 0

Answer: Girls: 20

Boys: 30

Step-by-step explanation: 40% of 50 is 20, which means there are 20 girls.

Subtract 50-20 to get the number of boys, which is 30.

mafiozo [28]3 years ago
5 0

Answer:

If you asked the correct question, the answer would be 52.5 boys.

But, I believe the correct question is "In a class of 35 students, 40% are girls. Determine the number of boys." And the answer is 21 boys.

Step-by-step explanation:

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Complete Question

The complete question is shown on the uploaded image  

Answer:

1 ) The correct option B

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Step-by-step explanation:

From the question we are told that

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Generally the standard deviation of the number of students who own a cell phone in a simple random sample of 15 students is mathematically represented as

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