alleryIf 12 workers can complete a task in 8 days, 16 workers will complete it in:
A4 days
B6 days
C9 days
D10 days
Answer & Solution
Correct answer: B. 6 days
1. The total work is 12 x 8 = 96 worker-days.
2. This total does not change when the team size changes.
3. With 16 workers the time needed is 96 / 16.
4. That is 6 days.
5. More workers means fewer days, so the answer must fall below 8, which rules out 9 and 10.
_Source: syllabus Maths, Ch 11 'Direct and Inverse Proportions', S11.3 Inverse Proportion_
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