Solve a variety of problems involving duration, including where times are expressed in 12-hour and 24-hour notation, that require the use of mixed units (years, months, days, hours and/or minutes)

1.		Here a fraction there a fraction: Calculate a fraction of a quantity, then a fraction of the fraction.
2.		Chicken Rules, OK? - Derive and solve an algebraic expression
3.		Chicken Rules, OK? - Derive and solve an algebraic expression
4.		It's A Bug's Life - 17 years after 2004
5.		The wheels on the bus... 2 - read timetable and calculate duration
6.		The Bear Facts 2 - calculate duration of hibernation in days
7.		Commuter Tutor - calculate arrival times
8.		Rush Hour - complete timetable given trip and wait times
9.		A Breath of Fresh Air - number of 15 minute intervals in one day
10.		Travel Time 5 - calculate time between 08:45 and 14:35
11.		Early To Bed, Early To Rise - calculate duration of night
12.		Race Against Time 1 - calculate duration in hours and minutes
13.		Fishy Business 3 - calculate time of concurrent events
14.		Lunar Ticks 1 - lunar months and years
15.		Goal Posts Bus Service Timetable 2 - calculate total time spent over 12 months
16.		Goal Posts Bus Service Timetable 1 - calculate total time spent over 12 months
17.		Race Against Time 2 - calculate duration in hours and minutes
18.		The Bear Facts 3 - quadrennium, years, days
19.		Baby Boom - 336 days after Jan 1st
20.		Rev It Up - calculate time in hours and minutes from RPM
21.		Lunar Ticks 6 - astronomical time units, saros
22.		In The Blink Of An Eye 2 - metric time; metric hours, beats and blinks
23.		Pumping Maths - time to fill fuel tank given rate
24.		The Sanders Family Pool! - time taken to fill pool from 40000L to 43000L
25.		The Sanders Family Pool! - time taken to fill 43000L pool at 20.5L/min
26.		The Sanders Family Pool! - time taken to fill pool from 40000L to 43000L
27.		A Bright Spark - standard deviation