Practice Time and work Questions and Answers

• ‘A’ alone can do some work in 12 days. ‘B’ and ‘C’ together can do the same work in 6 days. If ‘B’ is half as efficient as ‘A’, then fi...
• ‘A’ alone can do some work in 10 days. ‘B’ and ‘C’ together can do the same work in 12 days. If ‘B’ is half as efficient as ‘A’, then f...
• ‘A’ alone can do some work in 13 days. ‘B’ and ‘C’ together can do the same work in 18 days. If ‘B’ is half as efficient as ‘A’, then f...
• ‘A’ alone can do some work in 20 days. ‘B’ and ‘C’ together can do the same work in 15 days. If ‘B’ is half as efficient as ‘A’, then f...
• ‘A’ alone can do some work in 25 days. ‘B’ and ‘C’ together can do the same work in 10 days. If ‘B’ is half as efficient as ‘A’, then f...
• ‘A’ alone can do some work in 10 days. ‘B’ and ‘C’ together can do the same work in 4 days. If ‘B’ is half as efficient as ‘A’, then fi...
• Average speed of ‘A’ during a 22-hour journey is 22 km/h. If he covered the first 280 km of his journey at a speed of 20 km/h, then find the speed at w...
• The ratio of efficiencies of X and Y for doing a certain work is 5 ∶ 9. Working together, they can complete a work in 15 days. X alone will complete 66(2...
• ‘A’ and ‘B’ can do a piece of work in 20 days and 40 days, respectively. If they started the work together and worked on it for 6 days, then find t...
• ‘A’ and ‘B’ can do a piece of work in 20 days and 30 days, respectively. If they started the work together and worked on it for 7 days, then find t...
• ‘A’ and ‘B’ can do a piece of work in 25 days and 30 days, respectively. If they started the work together and worked on it for 8 days, then find t...
• ‘A’ and ‘B’ can do a piece of work in 20 days and 32 days, respectively. If they started the work together and worked on it for 9 days, then find t...
• ‘A’ and ‘B’ can do a piece of work in 22 days and 25 days, respectively. If they started the work together and worked on it for 6 days, then find t...
• ‘A’ and ‘B’ can do a piece of work in 20 days and 32 days, respectively. If they started the work together and worked on it for 5 days, then find t...
• ‘A’ and ‘B’ can do a piece of work in 30 days and 20 days, respectively. If they started the work together and worked on it for 4 days, then find t...
• ‘A’ and ‘B’ can do a piece of work in 12 days and 15 days, respectively. If they started the work together and worked on it for 2 days, then find t...
• A buffalo alone can plough field ‘A’ in 30 days. A Bull alone can plough the field ‘A’ in 50 days. Find the number of days taken by 2 bulls and 1 b...
• A buffalo alone can plough field ‘A’ in 50 days. A Bull alone can plough the field ‘A’ in 75 days. Find the number of days taken by 1 bulls and 3 b...
• A buffalo alone can plough field ‘A’ in 40 days. A Bull alone can plough the field ‘A’ in 80 days. Find the number of days taken by 3 bulls and 1 b...
• A buffalo alone can plough field ‘A’ in 20 days. A Bull alone can plough the field ‘A’ in 32 days. Find the number of days taken by 2 bulls and 2 b...
• A buffalo alone can plough field ‘A’ in 20 days. A Bull alone can plough the field ‘A’ in 10 days. Find the number of days taken by 1 bulls and 4 b...
• A buffalo alone can plough field ‘A’ in 80 days. A Bull alone can plough the field ‘A’ in 160 days. Find the number of days taken by 2 bulls and 1 ...
• A buffalo alone can plough field ‘A’ in 30 days. A Bull alone can plough the field ‘A’ in 36 days. Find the number of days taken by 2 bulls and 1 b...
• A 250 litres mixture contains only water and phenyl in the ratio 3:2, respectively. If 60 litres of this mixture is replaced with 90 litres of alcohol, the...
• A 150 litres mixture contains only water and phenyl in the ratio 3:2, respectively. If 20 litres of this mixture is replaced with 65 litres of alcohol, the...
• A 210 litres mixture contains only water and phenyl in the ratio 3:2, respectively. If 60 litres of this mixture is replaced with 100 litres of alcohol, th...
• ‘A’ alone can complete a work in 50 hours. ‘A’ started the work alone and left after working on it for 30 hours. If ‘B’ completed the rest of t...
• ‘A’ alone can complete a work in 50 hours. ‘A’ started the work alone and left after working on it for 10 hours. If ‘B’ completed the rest of t...
• ‘A’ alone can complete a work in 20 hours. ‘A’ started the work alone and left after working on it for 15 hours. If ‘B’ completed the rest of t...
• ‘A’ alone can complete a work in 50 hours. ‘A’ started the work alone and left after working on it for 20 hours. If ‘B’ completed the rest of t...
• ‘A’ alone can complete a work in 40 hours. ‘A’ started the work alone and left after working on it for 20 hours. If ‘B’ completed the rest of t...
• ‘A’ alone can complete a work in 50 hours. ‘A’ started the work alone and left after working on it for 40 hours. If ‘B’ completed the rest of t...
• ‘A’ alone can complete a work in 50 hours. ‘A’ started the work alone and left after working on it for 30 hours. If ‘B’ completed the rest of t...
• A man travelled a total distance of 200 km. He travelled first 150 km on car with a speed of 30 km/h and rest of the distance on bike whose speed is 20 km/...
• 50 men can complete a piece of work in 15 days. 10 men started the same work and worked for 10 days, and then joined by ‘x’ more men such that the rema...
• 60 men can complete a piece of work in 12 days. 12 men started the same work and worked for 10 days, and then joined by ‘x’ more men such that the rema...
• 55 men can complete a piece of work in 12 days. 15 men started the same work and worked for 10 days, and then joined by ‘x’ more men such that the rema...
• 30 men can complete a piece of work in 11 days. 15 men started the same work and worked for 8 days, and then joined by ‘x’ more men such that the remai...
• 28 men can complete a piece of work in 12 days. 12 men started the same work and worked for 10 days, and then joined by ‘x’ more men such that the rema...
• The time taken by ‘A’ to build a wall alone is 50% more than the time taken by him to build it along with ‘B’. ‘B’ will take how much percent m...