Finding the fraction of things

This task is about finding fractions of quantities.
 
a) Jess has 8 toy horses. This is \(1 \over 4\) of her collection of toy animals.
Show how to work out how many toy animals she has altogether.

 
 
 
 
 

Answer: __________  
 
b)
 
In Te Kanohi School 30 students have cell phones. This is \(3 \over 5\) of the students at the school.
Show how to work out how many students there are in the school altogether.

 
 
 
 
 

Answer: __________  
 
c)
 
At a game of rugby there are 84 people in the crowd. \(4 \over 7\) of them support the home team.
Show how to work out how many home team supporters there are.

 
 
 
 
 

Answer: __________