Mixing quantities at different rates/concentrations.
3
Sets
15min
Per set
25
Qs / set
Questions 1 to 25
Questions 26 to 50
Questions 51 to 67
Percentages
Percentage change, profit-loss, discount applications.
Ratio & Proportion
Direct/inverse proportion, partnership splits.
Averages
Mean, weighted average, shifts on adding/removing values.
