30 labourer's working 7 hours a day can finish a piece of work in 18 days, if the Labourer's work 6 hours a day, the number of Labourers required to finish the same piece of work in 30 days will be _________.
- 16
- 18
- 20
- 21
Explanation
Let the required number of labourers be x
Less working hour/day, More labours (Indirect proportion)
More days, fewer labourers (Indirect proportion)
Related MCQs
- Right angle
- Reflex angle
- Complementary angle
- Supplementary angle
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