Question

If a classroom contains 35 students, 2/5 of which are girls, then how many boys are in the class?

Answer 1

The classroom has 28 students that are equivalent to 4/4  

but says that 3/4 of them are girls  

so a quarter of students are boys  

this would be like that 4/4  

= 28 students q is the total  

1/4 = x students only males  

here we cross out the denominators that are painted, and we make a rule of 3 pure direct  

the answer is q 1/4 of students the only male is 7  

Answer 2

SOLUTION :  

Given :  

Total number of students in a classroom = 35  

Girls in the classroom = ⅖ of total students

Number of girls = ⅖ × 35 = 2× 7 = 14

Number of girls = 14

Number of boys = Total number of students in a classroom - Number of girls  

Number of boys = 35 - 14 = 21  

Number of boys = 21

Hence, the Number of boys in the class = 21.

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