Intermediate · 5. Ratios, weighted data and work rates
Distinguish actual measurements from readings on a measuring tape, averages from totals, and times from rates; when several strategies compete, model each one to find the best.
AMC Australia · Intermediate · Selected Topics
Recognise the clues and choose a suitable method.
Explain each step in the five examples.
Solve real competition problems and spot the mistakes you need to fix.