Question

In a class of 35 students, number of girls is 2/5 of the boys. Then the number of boys in the class is ________
1. 25
2. 24
3. 35
4. 10​

Answer 1

Answer:

10

Step-by-step explanation:

let no. of boys as x

then, x×2/5=girls

x+2x/5= 35

7x/5=35

7x=35×5

x=25

then,.

girls=2/5×25=10

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Answer 2

Answer:

Let the number of boys be X and for girls be 2/5x

Students in class = 35 students

2/5x + x = 35 students

•°• x = 35 × 5 / 7 = 25 students

therefore, boys are in class 25