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Practice Chain Rule – If 18 bindres bind 900 books in 10 days , How many binders will be required to bind 660 books in 12 days?

Practice Chain Rule – If 36 men can do a piece of work in 25 hours, in how mwny hours will15 men do it?

Practice Chain Rule – If 20 men can build a wall 56 meters long in 6 days , what length of  a similar wall can be  built by 35 men in 3 days?

Practice Chain Rule – A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the smaller wheel has made 21 revolutions, then the number of revolutions mad by the larger wheel is:

Practice Chain Rule – 3 pumps working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?

Practice Chain Rule – 2 men and 7 boys can do a piece of work in 14 days; 3 men and 8 boys can do the same in 11 days. Then, 8 men and 6 boys can do three times the amount of this work in 

Practice Chain Rule – If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days?

Practice Chain Rule – An industrial loom weaves 0.128 metres of cloth every second. Approximately, how many seconds will it take for the loom to weave 25 metre of cloth ?

Practice Chain Rule – If 8 men can reap 80 hectares in 24 days , then how many hectares can 36 men reap in 30 days?

Practice Chain Rule – If the price of 23 toys is 276, then what will the price of 12 toys ?

Practice Chain Rule – A contractor undertakes to do a piece of work in 40 days. He engages 100 men at the begining and 100 more  after 35 days and completes the work in stipulated time. If he had not  engaged  the additional men, how many days  behind schedule would it be finished?

Practice Chain Rule –  In a dairy farm, 40 cows eat 40 bags of husk in 40 days. In how many days one cow will eat one bag of husk?

Practice Chain Rule – A certain number of men can finish a piece of work in 100 days. If there were 10 men less, it would take 10 days more for the work to be finished. How many men were there originally?

Practice Chain Rule –  4 mat-weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 8 mat-weavers in 8 days?

Practice Chain Rule – If 16 men working 7 hours day can plough a fieid in 4l days, inhow many days will 14 men working 12 hours a clay plough the samefield ?