Question

In a class of 49 students, number of girls is2/5 of the boys, find the number of boys in the class

ANSWER
Let the number be =x
girls =2/5 of the boys

x + 2x/5= 49
5x+2x/5= 49
7x/5 =49
7x = 49×5
7x = 49×5/7
x = 35
girls = 2/5×35
girls =14​

Answer 1

Answer:

number of boys in the class = 35.

Step-by-step explanation:

Let the number of boys = x.

Then the number of girls will be 2/5 of the boys = 2/5 * x.

Given that Total number of students = 49.

x + 2/5 * x = 49

7/5 * x = 49

7x = 49 * 5

x = 245/7

x = 35.

Therefore the number of boys in the class = 35.

Answer 2

Answer:

let the total number of boys be x

total students in class =49

number of girls=2 by 5 of the boys

=2/5×x=2x/5

X+2x/5=49

x+2x=49×5

3x=245

x=245/3

=81.6

so total number of girls=2/5×81.6

32. 64