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Vaselesa [24]
3 years ago
11

The ratio of boys to students is 3 to 7. If there are 20 girls in the school, then how many boys are in the school?

Mathematics
1 answer:
qwelly [4]3 years ago
5 0

Answer:

No. of boys = 15

Step-by-step explanation:

Given that,

The ratio of boys to student is 3:7.

Number of girls in the school = 20

We need to find the number of boys in the school.

Let there are 3x boys and 7x number of students.

No. of girls = Total students - no. of boys

= 7x-3x

= 4x

ATQ,

4x = 20

x = 5

No. of boys = 3x

= 3(5)

= 15

Hence, there are 15 boys in the school.

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