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 _________.
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 _________.
Explanation
Let the required number of labourers be x
Less working hour/day, More labours (Indirect proportion)
More days, fewer labourers (Indirect proportion)
