Question

6) 25% of a student in a school are girls
and another are boys from an equation
answer the following
i) find the number of boys if girls number is 25

1) find number of girls if no. of boys
is 45
please give answer fastly​

Answer 1

Answer:

no.of boys=(3/4)x

no of girls=x/4

Step-by-step explanation:

25%=25/100 =1/4

let total no of students be 'x'

hence, x×1/4= x/4 girls

remaining no of boys = x-x/4.....(1)

=> (3/4)x ..........(2)

therefore no of boys= x-x/4 ......from (1)

1) if girls are 25

x/4 = 25

=> x= 100

no of boys= 100-25=75

2) if boys are 45

=> (3/4)x = 45

=> x= 45×4÷3

=> x= 15×4

=> x = 60

no of girls=60-45=15

hence all answers