### Why do this
problem?

The

problem
requires interpretiation of the information given and the creation
of equations from that information. Discussion of the ways of
interpreting the information could help to develop team working and
communication skills.

### Possible approach

You might give learners some time to work independently on this
problem then get them to share their ideas in small groups or
pairs.

### Key questions

What are the unknowns?

What equations an we write down based on the information
given?

### Possible support

You might first try the easier non-standard simultaneous equations
problems

Always Two and

System Speak .