1. Example problems

A picnic is being planned in a school for Class $VII$. Girls are $60 \%$ of the total number of students and are $18$ in number. The picnic site is $55 \ km$ from the school and the transport company is charging at the rate of $₹12$ per $km$. The total cost of refreshments will be $₹4280$.

 

Can you tell.

 

(i) The ratio of the number of girls to the number of boys in the class? $i:i$

 

(ii) The cost per head if two teachers are also going with the class? $₹$

 

(iii) If their first stop is at a place $22 \ km$ from the school, what per cent of the total distance of $55 \ km$ is this? $i\%$

 

What per cent of the distance is left to be covered? $i\%$