A can do a piece of work in 4 days and B can complete the same work in 12 days. What is the number of days required to do the same work together?
A can do a piece of work in 4 days and B can complete the same work in 12 days. What is the number of days required to do the same work together?
A). 2 days
B). 3 days
C). 4 days
D). 5 days
1 answers
Other Questions
1. A, B and C are employed to do a piece of work for Ra. 5,290. A and B together are supposed to do $\frac{19}{23}$ of the work and B and C together $\frac{8}{23}$ of the work. Then A should be paid
2. 15 labourers complete a work in 10 days working 6 hours per day. If 18 labourers are employed on that work and the work is to be completed in 5 days then how many hours per day the work should be cont
3. A can do a piece of work in 20 days and B in 15 days. With help of C, they finish the work in 5 days. C can alone do the work in
4. A and B can separately complete a piece of work in 20 days and 30 days respectively. They worked together for some time, then B left the work. If A completed the rest of the work in 10 days, then B worked for
5. Babu and Asha can do a Job together in 7 days. Asha is 1 3/4 times as efficient as Babu. The same Job can be done by Asha alone in
6. A and B can do a work in 12 days, B and C in 30 days and C and A in 36 days. In how many days will the work be completed, if all three of them work together?
7. Ramesh can do a work in 24 days. With the help of his friend Shyam, he can do the same work in 15 days. If they get Rs. 14240 for that work, what is the share of Shyam ?
8. A can do a certain work in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in:
9. A tank is completely filled in 16 hours but takes four hours more to fill because of a leak in the bottom of the bank. What time will the leak take to empty the completely filled tank ?
10. A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work?
