Question

70% of student are boys in a school and number of girls is 840 find the number of boys are in a school​

Answer 1

Answer:

Step-by-step explanation:

From the given inf

Let total no. Of students be x

30% of x = 840

So x = 2800

Then

70% of 2800= 1960

No of boys

1960

Answer 2

70% of students are boys.

Then, 30% of students are girls.

We know that, number of girls is 840

Let the total number of students be x.

Then, 30% of x = 840

So, 30/100 * x = 840

So, x = 840 * 100/30

So, x = 2800 students

Then, the number of boys is 2800 - 840= 1960

Therefore, there are 1960 boys in the school.

Hope it helps!

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