20 men or 30 boys can do a certain job in 20 days. How long will it take 6 men and 15 boys to do the same job?
Correct answer A. 25 days
Tip: press A, B, C or D to answer, and N for the next question.
Advertisement
More Time and Work questions
See all20 men can do a certain work in 60 days but after every five days five additional men join them. In how many days will work be done now?
Correct answer D. 34.5 days
Two pipes A and B can fill a tank in 14 and 21 hrs respectively. If both pipes are opened together then after how many hours A should be closed so that tank is full in 7 hours.
Correct answer A. 28/5 hrs
Advertisement
A tank can be filled by tap A in 16 hrs and by tap B in 20 hrs. Both the taps are kept opened for 8 hrs and then A is closed. In how many more hours will the tank be completely filled?
Correct answer A. 2 hrs
A tank has a leak which would empty it in 10 hrs. A tap is turned on and it admits 9 liters per minute into the tank and tank is now emptied in 25 hrs. How many liters tank holds?
Correct answer A. 9000
Discussion