Computer printing

This task is about calculating with rates.
   illustration: printer
The printer for a computer prints 5 pages each minute.
 
a)
How many pages will it print
 
 
i)
 
ii)
 
iii)
 
in 4 minutes? __________
 
in 1 hour? __________
 
from 9:20 a.m. until 9:45 a.m.? __________
 
b)
How long will the printer take to print
 
 
i)
 
ii)
 
iii)
 
45 pages? __________ minutes
 
200 pages? __________ minutes
 
1200 pages? __________ hours
 
c)
Anita's computer prints 30 pages in 5 minutes.
How many pages does it print each minute?  
 
__________
 
You may show your working out here: