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?

Ravi can do a piece of work in 15 hours while Raman can do it in 12 hours. How long will both take to do it, woking together?

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?

A cistern can be filled by one tap in 4 hours and by another in 3 hours. How long will it take to fill it if both taps are opened together ?

A cistern can be filled by one tap in 4 hours and by another in 3hours.How long will it take to fill it if both taps are opened together?

Tap A can fill a cistern in 8 hours and tap B can empty it in 12 hours.How long will it take to fill the cistern if both of them are opened together?

George takes 8 hours to copy a 50 -page manuscript while Sonia can copy the same manuscript in 6hours.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.backslash9(5)/(7)