KS2 Maths Reasoning Question Preview

The efficiency of two home heating systems are being compared.

The two systems are being measured on how quick it takes to warm a room when put on full from a temperature of 4°C.

Heat – Ex guarantees to get to 20°C in under 15 minutes.

Warmo guarantees to beat any of the competition to 20°C.

Both sets of results are shown on the graph.

Which guarantees are correct?

Choose your answer: