The diagram shows an empty fish tank in the shape of a rectangular prism. The tank is being filled from a tap. Water flows into the tank at a constant rate of 0.5 litres per second.

How long will it take for the fish tank to be filled completely?
44 exam-style questions on Edexcel GCSE Maths Volume of a Prism. Each one has a worked solution and a mark scheme showing where the marks go.