Mastering Time and Work Concepts

If A can complete a work in 10 days and B can do it in 15 days, how long will they take to complete the work together?

• 10 days

• 8 days

• 5 days

• 6 days

A can do a piece of work in 12 days, while B can do it in 18 days. How long will it take for both A and B to complete the work together?

• 7.2 days

• 8 days

• 10 days

• 5 days

If a pipe can fill a tank in 6 hours and another pipe can empty it in 8 hours, how long will it take to fill the tank if both pipes are opened together?

• 30 hours

• 18 hours

• 24 hours

• 12 hours

A can complete a work in 20 days, B in 30 days, and C in 60 days. How long will they take to complete the work together?

• 10 days

• 15 days

• 5 days

• 25 days

If A can do a work in 15 days and B can do it in 10 days, how much work will they complete together in 5 days?

• 3/4 of the work

• 1/2 of the work

• 5/6 of the work

• 2/3 of the work

A and B can complete a work in 12 days and 15 days respectively. How long will they take to complete the work if A works alone for 4 days and then B joins?

• 8.44 days

• 6 days

• 12.5 days

• 10 days

If a tank can be filled by a pipe in 5 hours and emptied by another pipe in 10 hours, how long will it take to fill the tank if both pipes are opened together?

• 5 hours

• 15 hours

• 20 hours

• 10 hours

A can complete a work in 8 days, B in 12 days, and C in 24 days. If they work together, how long will it take to finish the work?

• 4 days

• 10 days

• 2 days

• 6 days

If A can do a work in 9 days and B can do it in 6 days, how much work will they complete together in 3 days?

• 3/4 of the work

• 1/2 of the work

• 2/3 of the work

• 5/6 of the work

A can complete a work in 10 days, B in 15 days, and C in 30 days. If they work together for 5 days, how much of the work is left?

• 1/4

• 1/2

• 1/6

• 1/3