Advertisements
Advertisements
प्रश्न
A, B, and C can do a piece of work in 6 days, 12 days, and 24 days respectively. In what time will they altogether do it?
Advertisements
उत्तर
A can do a piece of work in = 6 days
B can do a piece of work in = 12 days
C can do a piece of work in = 24 days
∴ A's 1-day work =`1/6`
∴ B's 1-day work = `1/12`
∴ C's 1-day work = `1/24`
(A+B+C)'s 1-day work =`1/6+1/12+1/24`
`=(4+2+1)/24=7/24`
∴ (A+B+C) can do the work in =`24/7` days
`=3 3/7` days
APPEARS IN
संबंधित प्रश्न
72 men do a piece of work in 25 days. In how many days will 30 men do the same work?
In order to complete a work in 28 days, 60 men are required. How many men will be required if the same work is to be completed in 40 days?
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?
A and B together can do a piece of work in `6 2/3` days, but B alone can do it in 10 days. How long will A take to do it alone?
A and B working together can mow a field in 56 days and with the help of C, they could have mowed it in 42 days. How long would C take by himself?
A can do a piece of work in 24 days, A and B can do it in 16 days and A, B, and C in `10 2/3` days. In how many days can A and C do it working together?
A can finish a piece of work in 15 days and B can do it in 10 days. They worked together for 2 days and then B goes away. In how many days will A finish the remaining work?
A and B can do a work in 8 days; B and C in 12 days, and A and C in 16 days. In what time could they do it, all working together?
A and B can do a piece of work in 40 days; B and C in 30 days; and C and A in 24 days.
- How long will it take them to do the work together?
- In what time can each finish it working alone?
Two pipes P and Q would fill an empty cistern in 24 minutes and 32 minutes respectively. Both the pipes being opened together, find when the first pipe must be turned off so that the empty cistern maybe just filled in 16 minutes.
