George takes 8 hours to copy a 50-page manuscript while Sonia can copy the same manuscript in 6 hours. How many hours would it take them to copy a 100-page manuscript, if they work together? `6 6/7` b. `9` c. `14` d. `\ 9 5/7`

Sita can finish typing a 100 page document in 9 hours, Mita in 6 hours and Rita in 12 hours. How long will they take to type a 100 page document if they work together?

If 30 oxen can plough (1)/(7)th of a field in 4 hours,in how many hours will 18 oxen take to do the remaining work?

Tushar takes 6 hours to complete a piece of work, while Amar completes the same work in 10 hours. If both of them work together, then what is the time required to complete the work?

Sunny and Paula can complete a piece of work together in 12 hours. While Paula takes 18 hours to complete the work 2 alone, another individual, Jane, takes 45 hours to complete the same piece of work alone. How many hours would it take Sunny and Jane to complete the same work together ?

15 persons working 8 hours a day can complete a work in 21 days.How many days will 14 persons take to complete a work 1(1)/(2) xx as great,if they work 6 hours a day?

A can finish a piece of work in 12 hours while B can finish it in 15 hours. How long will both take to finish it, working together?