Advertisements
Advertisements
प्रश्न
Choose the most appropriate option
‘A’ and ‘B’ complete a work in 12 days, ‘B’ and ‘C’ in 8 days and ‘C’ and ‘A’ in 16 days. ‘A’ left after working for 3 days. In how many days more will ‘B’ and ‘C’ finish the remaining work?
पर्याय
`3 3/4`
`4 3/4`
`6 5/6`
`7 3/4`
Advertisements
उत्तर
`4 3/4`
Explanation:
A, B, and C together can do work in
`=(2xx12xx8xx16)/(12xx8+8xx16+16xx12)`
`=96/13` days
Work is done by all in 3 days`=13/96xx3=39/96`
∴ Remaining work`=1-39/96=57/96`, which is to done by B and C.
∴ B and C can do the remaining work in `57/96xx8`
∴`57/12=4 3/4` days.
APPEARS IN
संबंधित प्रश्न
A tank is connected to three pipes – Pipe A, B, and C. Pipe A can fill the tank in 6 hours, B can fill the tank in 8 hours and Pipe C can empty the full tank in 12 hours. How much time will it take to fill the tank completely if all three pipes are working together?
Choose the most appropriate option.
A can do a piece of work in 8 days and B alone can do the same work in 10 days. A and B agreed to do the work together for Rs. 720. With the help of C, they finished the work in 4 days. How much C is to be paid?
A group of workers accepted to do a piece of work in 25 days. If 6 of them did not turn up for the work and the remaining workers did the work in 40 days, then the original number of workers was
A and B can together finish work in 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days, A alone can finish the work?
15 men can do a work in 20 days. If there are 25 men, how many days will it take to complete the work?
A machine P can print one lakh books in 8 hours, machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 A.M. while machine P is closed at 11 A.M. and the remaining two machines complete work. Approximately at what time will the work (to print one lakh books) be finished?
Two men A and B, each working alone by working 12 hours per day, can complete a work in 20 days. For execution of the work, it was decided that A and B would be working for 8 and 6 hours per day, respectively, on alternate days starting with A. If it takes x days and y hours to complete the work then (x, y) is:
Anil can do a job in 10 days. Sunn is 40% more efficient than Anil. Find the no. of days required by Sunil to do the same job.
Puja is 30% less efficient than Poonam. If Poonam takes 20 days to do a job, how many days would Puja take to do the work.
B is `4/3` times as efficient as A. If A can complete `5/8`th of a given task in 15 days, what fraction of the same task would remain incomplete if B works on it independently for 10 days only?
