(a)[1]
A film begins at $22\ 35$ and ends at $01\ 20$. For how many hours and minutes does the film run?
(b)[2]
Starting on 1 May, Leila goes swimming every day. Each day she swims 30 lengths of the swimming pool. The swimming pool measures $20\text{ m}$ in length. Work out the date on which Leila has swum a total of $10\text{ km}$.