A and B can do a work in 20 days working together. If A alone can do that work in 30 days, then in how many days B can complete that work working alone?

Nisha is 60% more efficient than Neha. If Nisha can complete a work in 40 days, then in how many days Neha can complete that same work?

Gopal is 25% more efficient than kamal. If Kamal can complete a work in 40 days, then in how many days can Gopal complete that work?

Ram, Shyam and Hari can complete a work in 20, 30 and 60 days respectively working alone. Working together in how many days do they all can finish the work?

A and B together can do a work in 4 days. If A can complete that work alone in 12 days, then how many days can B complete that work alone?

Tap A can fill a tank in 20 minutes and Tap B can empty same tank in 25 minutes. If both the tap were left open, in how much time they could fill the empty tank?

A is 2 times as efficient as B. If both of them working together can complete a task in 24 days, then how many days A can complete the same task working alone?

P can do a work in 20 days and Q can do that work in 40 days. P and Q together start working and after 8 days P leaves Q alone. In how many days the remaining work is completed?

A completes 80% of a work and calls B to complete the remaining work. If they complete the remaining work in 3 days, then in how many days B can complete the work?

Food sufficient to 18 soldiers for 15 days will be sufficient to 27 soldiers for how many days?

In a hostel, there is food sufficient to 40 students for 60 days. If 10 students left the hostel, then for how many days will the food be sufficient for students in that hostel?

A is 3 times as capable as B. If A can do some work in 12 days, then B can do same work in how many days?

If 15 men takes 12 days to complete a task, then how many more men are required to complete that task in 9 days?

To complete a certain task A needs twice as much time as B needs and B needs thrice as much time as C needs. If together they can complete the task in 6 days, then how many days A needs to complete the same task alone?

A and B can complete a certain task in 40 and 60 days respectively. After working together for some time, A leaves B alone to complete that task. If B takes 10 days to the remaining task alone, then for how many days did they work together?

Tap A and B can fill a tank in 15 days and 18 days respectively. If tap C can empty the tank in 30 minutes, in how many minutes will the tank be filled when all three taps are turned simultaneously.

15 workers can dig a field in 4 days working 6 hours a day. In how many days can 12 workers dig the field double in area working 8 hours a day.

A and B can complete a work in 8 and 12 days respectively. If A and B working together, completed the work and got Rs.200 as wage, how much will B get?

A can do ⅓ rd of a task in 5 days and B can do ⅖ th of same task in 10 days. Together they can complete the whole task in how many days?

X can complete ¼ of work in 10 days, Y can complete 40% work in 20 days and Z can complete the ⅓ rd of the same work in 13 days. Who will finish the work fastest?

A and B can complete a work in 24 days, B and C can complete the work in 36 days and A and C can complete the work in 48 days. In how many days the work will be completed if they all work together?

A and B can complete a work in 8 days, B and C can complete the work in 12 days and A, B and C together can complete the work in 6 days. In how many days can A and B complete the work?

A is thrice as efficient as B. If A can complete a work 60 days earlier than B, in how many days can they complete the work working together?

A, B and C can complete a work in 12, 16 and 20 days respectively. All of them started working together and C left after 2 days. In how many days the remaining work will be completed?

X and Y can complete a work 20 and 12 days respectively, X starts the work and is assisted by Y after 4 days. For how many days the work lasted from the beginning?

X can complete a work in 40 days. He works for 8 days and leaves and the remaining work is completed by y in 16 days. In how many days can they complete the work working together?

12 people can complete a work in 9 days. If 6 people are added after 6 days, in how many days the remaining work will be completed?

3 boys or 9 girls can complete a work in 21 days. In how many days can 5 boys and 6 girls complete the work?

4 men and 6 women can complete a work in 8 days. 3 men and 7 women can complete the work in 10 days. In how many days can 10 women complete the work?

A, B and C can complete a work in 20, 30 and 60 days respectively. A start the work and is assisted alternately by B and C in each second and third days, In how many days the work will be completed?