Advertisements
Advertisements
प्रश्न
90 men can complete a work in 24 days working 8 hours a day. How many men are required to complete the same work in 18 days working `7 1/2` hours a day?
Advertisements
उत्तर
In 24 days, working 8 hours a day, work can be completed by = 90 men
In 1 day, working 8 hours a day, work can be completed by = 90 × 24 men
In 18 days, working 8 hours a day, work can be completed by =`(90xx24)/18` men
In 18 days, working 1 hour a day, work can be completed by = `(90xx24)/18xx8` men
In 18 days, working `7 1/2` i.e. `15/2` hours a day, work can be completed by =`(90xx24xx8)/18xx2/15` men
`=(90xx24xx8xx2)/(18xx15)=(1xx24xx8xx2)/3` = 128 men
APPEARS IN
संबंधित प्रश्न
36 men can do a piece of work in 7 days. How many men will do the same work in 42 days?
If 12 men or 18 women can complete a piece of work in 7 days, in how many days can 4 men and 8 women complete the same work?
A contractor undertakes to dig a canal, 6 kilometers long, in 35 days and employed 90 men. He finds that after 20 days only 2 km of the canal has been completed. How many more men must be employed to finish the work on time?
Twelve typists, all working with the same speed, type a certain number of pages in 18 days working 8 hours a day. Find, how many hours per day must sixteen typists work in order to type the same number of pages in 9 days?
A can do a piece of work in 10 days and B in 15 days. How long will they take together to finish it?
A can do a work in 15 days and B in 20 days. If they together work on it for 4 days; what fraction of the work will be left?
A can do a piece of work in 20 days and B in 15 days. They worked together on it for 6 days and then A left. How long will B take to finish the remaining work?
A can-do `1/4` of work in 5 days and B can do `1/3` of the same work in 10 days. Find the number of days in which both working together will complete the work.
A can do a piece of work in 10 days, B in 12 days, and C in 15 days. All begin together but A leaves the work after 2 days and B leaves 3 days before the work is finished. How long did the work last?
X alone can do a piece of work in 6 days and Y alone in 8 days. X and Y undertook the work for ₹ 48000. With the help of Z, they completed the work in 3 days. How much is Z’s share?
