Mutley's wheelbarrow

[qwerty keyboard]

Mutley is enjoying a day down on his allottment and he's taking a few cans of John Smiths with him. Study the attached diagram and answer the following questions:

1) Approximately how many 4 packs can Mutley fit into the tray of the barrow if a pack is 160mm h x 120mm w x 120 d?

2) The barrow has a 85 litre capacity. How many 440ml cans will Mutley need to fill it?

3) If it took Mutley 5 minutes to drink 0.25l of beer through a straw how many hours/mins would it take to drain the barrow allowing for a piss break every hour?