Time & Work

QUESTION

QUES 1: A can complete a work in 10 days while B can complete a work in 15 days. In how many days both can complete the same work together?

QUES 2: Amit can complete a work in 18 days while Sumit can complete a work in 24 days. In how many days both can complete the same work together?

QUES 3: Reena can complete a work in 15 days while Meena can complete a work in 20 days. In how many days both can complete the same work together?

QUES 4: A and B together can complete a work in 12 days. If A alone can complete a work in 18 days. Then in how many days B alone can complete that work?

QUES 5: Prem and Raghav can make a wall in 180 minutes. If Prem  alone can make that in 270 minutes. Then how much time will Raghav take to make that wall?

QUES 6: A,B and C can complete a work in 20 days, 40 days and 60 days respectively. Then in how many days they can complete that work together?

QUES 7: Nutan, Vibha and Radha can complete a project in 25 days, 50 days and 75 days respectively. Then in how many days they can complete that project together?

QUES 8: Surendra and Rajendra can complete a work in 50 days. If Rajendra alone can complete that in 60 days. Then how much time will Surendra can complete that work?

QUES 9: A,B and C together can complete a work in 20 days. B and C can complete that same work in 40 days and 50 days respectively. In how many days A alone can complete that work?

QUES 10: A and B can complete a work in 12 days while B and C in 20 days and A and C in 15 days. In how many days A,B and C can complete half part of that work?

QUES 11: P and Q can complete a work in 20 days while Q and R in 25 days and R and P in 30 days. In how many days P,Q and R can complete that work?

QUES 12: A and B can complete a work in 40 days while B and C in 50 days and A and C in 60 days. In how many days A alone can complete that work?

QUES 13: A and B can complete a work in 27 days while B and C in 36 days and A and C in 24 days. In how many days B alone can complete that work?

QUES 14: Rohan and Sohan  can complete a work in 20 days and 40 days respectively. Rohan alone do that work for 10 days and then he left that work. In how many days Sohan can complete remaining work alone?

QUES 15: R and S can complete a work in 12 days and 18 days respectively. S alone do that work for 6 days and then he left that work. In how many days R can complete remaining work alone?

QUES 16: A and B can complete a work in 20 days and 40 days respectively. Both start working together after 5 days A left the job. In how many days B alone can complete the remaining work?

QUES 17: B is 40% more efficient than A. If B alone can complete that work in 30 days. Then in how many days A alone can complete that work?

QUES 18: A is four times efficient than B. If both together can complete that work in 28 days. In how many days A alone can complete that work?

QUES 19: A is twice efficient than B. If A take 9 days less than B to do that work. In how many days A alone can complete that work?

QUES 20: B is 80% efficient than A. In how many days B alone can complete that work?

QUES 21: 7 men or 10 women can complete a work in 24 days. Then in how many days 14 men and 4 women together can complete that work?

QUES 22: 4 men or 5 women or 6 boys can complete a work in 74 days. Then in how many days 2 men, 2 women and 2 boys together can complete that work?

QUES 23: 36 men can complete a work in 50 days. Efficiency of a man is 50% more than a boy. In how many days 10 men and 10 boys can complete that work?

QUES 24: 4 men and 6 women can complete a work in 10 days and 5 men and 2 women can complete the same work in 12 days. In how many days 10 men and 15 women can complete the same work?

QUES 25: 12 men and 22 women can complete a work in 30 days and 15 men and 10 women can complete the same work in 32 days. How many men can complete the same work in 36 days?