Question

A picnic is being planned in a school for class VII.Girls are 60 percent of the total number of

students and are 18 in number.​

Answer 1

Answer:

number of boys = 12

Step-by-step explanation:

number of girls= 18

percentage of girls of total number of students=60%

total number of students= 60/100×x=18

                                        =  6x=18×10

                                         x=180/6=30

number of boys =  40% of the total number of students

                          =  40/100×30

                          =   4×3  ( after cancelling the zeroes)

                          = 12

number of girls and boys is 18 and 12 respectively

total number of students = 18+12=30

hope its helpful

Answer 2

Answer:

Hope it will help you.

MARK MY ANSWER AS BRAINLIEST.

Step-by-step explanation:

let total no. of student be

60% of total is 18

60/100*x = 18

6/10*x= 18

x = 18*10/6

x = 30

therefore total no. of student is 30

no of boys => 30-18

=>12