Question

a picnic is being planned in a school for class 7th girls are 60% of the total number of students and are 28 in number the picnic sight is 55 km from the school and transport compart is charging at rate of 12 per kilometre the total cost of refreshment will be e rupees 4280 ​

Answer 1

Step-by-step explanation:

Given,

Percentage of girls=60%

Number of girls=18

Let,total numbers of students be x

Now,Percentage of girls=number of girls×100/total students

60=18/x×100

x=18×100/60

x=30

Therefore, total students =30

also,total students =no.of girls+no.of boys

30=18+no.of boys

no.of boys=30-18=12

thus,

ratio of girls to boys=no.of girls/no.of boys

=18/12

=3/2

....(dividing by 6)