Question

in a class of 35 and the number of girls in 2 / 5 times the number of boys find the number of boys in the class​

Answer 1

Answer:

Given:

Total students in a class = 35.

Number of girls = 2/5 of total students in a class

The remaining boys in the class = (1 - 2/5) = 3 / 5

So, we will calculate 3/5 of 35

No. of boys = (3/5) × 35

= 3 × 7 = 21

Therefore, there are 21 boys in the class.

Therefore, there are 21 boys in a class if a classroom contains 35 students, 2/5 of which are girls

Answer 2

Step-by-step explanation:

Given :-

In a class of 35 and the number of girls in 2 / 5 times the number of boys.

To find :-

Find the number of boys in the class ?

Solution :-

Given that

Total number of students in a class = 35

Let the number of boys be X

Then,

The number of girls

= 2/5 times the number of boys

= (2/5)×X

=(2×X)/5

=2X/5

Total students = Boys + Girls

=> (X)+(2X/5) = 35

=> (5X+2X)/5 = 35

=> 7X/5 = 35

=> 7X = 35×5

=> 7X = 175

=> X = 175/7

=> X = 25

The number of boys = 25

The number of girls = 35-25 = 10

Answer:-

Total number of boys in the class is 25