Problem 1: Jugs
Heuristics to highlight
Draw a diagram, Act it out, Guess-and-check, Use equations/algebra.
You are given two jugs, one holds 5 litres of water when full and the other holds
3 litres of water when full. There are no markings on either jug and the cross-section
of each jug is not uniform. Show how to measure out exactly 4 litres of water from
a fountain.
Show also the following:
- Get 2 litres from 3 litre and 7 litre jugs.
- Get 6 litres from 12 litre and 16 litre jugs.
- Get 12 litres from 18 litre and 24 litre jugs.