Case study·Standard multi-step (3/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
A school analyses commute times of students using the histogram shown.
Total: 4 marks
(a) How many students commute for less than minutes? (1 mark)
(b) How many students commute for minutes or more? (1 mark)
(c) What fraction of students commute for at least minutes? (2 marks)
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