Question

there are 30 there are 35 student in a class if 2.5 of them are boys find the number of girls in the class​

Answer 1

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Answer 2

Answer:

25

Step-by-step explanation:

Let no . girls be, x

Then no. boys =2/5(x)

   So,

   x+2/5(x)=35

 =7x/5=35

 =7x=35*5

 =x=35*5/7

 x = 5*5

 x =25

Number of girls = 25 and number of boys = 10