Two pipes can fill up a tank respectively in 3 hours and 6 hours and a third pipe can empty a tank in 9 hours. If three of them are working together then how long will it take to fill up the tank?
correct answer:-5
Two taps A and B can fill a tank individually in 6 hours and 8 hours respectively and tap C can empty the same tank in 12 hours. If all the taps are kept open, how many hours would it take to fill the tank?
correct answer:-2
Two persons A and B can complete a piece of work in 10 days and 20 days respectively. Together, they start working on the project, but A left after 4 days. How long more will B take to complete the project?
correct answer:-2
A car covers a distance from town A to town B at the speed of 58 kmph and covers the distance from town B to town A at the speed of 52 kmph What is the approximate average speed of the car?
correct answer:-1
A person travels the first 100km of his journey at 25km/hr and the next 200km at 40km/hr. Find the average speed of a person during his entire journey.
correct answer:-4
Two trains A and B are going in the same direction with the speeds of 20 km/h and 15 km/h respectively. If the starting point of B is 200 km ahead from the starting point of A, how long will it take A to meet with the train B?
correct answer:-3
A 400 m long train can cross a pole in 10 seconds. Find the time that this train will take to overtake a train of length 300m which is running at the speed of 72 km/hr in the same direction as that of the first train?
correct answer:-5
An empty tank has three inlet and two outlet pipes connected to it. An inlet pipe can fill an empty tank in 12 hours, while an outlet pipe can drain a filled tank in 10 hours. All inlet pipes have the same efficiency and both outlet pipes have the same efficiency. If all inlet pipes and outlet pipes connected to the empty tank are opened together, find the time in which the tank is completely filled.
correct answer:-4
A task is completed in a unique manner: on the first day, one man works; on the second day, two men work; on the third day, three men work, and so on, until the task is finished in 15 days. The same task is then assigned to women, who are known to be 40% as efficient as men. Following the same pattern, calculate the number of days required for the women to complete the task. (Round up to the nearest integer.)
correct answer:-1
P, Q, and R can complete a task in 10, 15, and 20 days, respectively. P and Q start working on the task together, and after 3 days, R joins, and P leaves. If they work together for 3 more days, what fraction of the task is left to be completed?
correct answer:-3
Ravi and Raju started from a same point on a circular track in opposite direction. They met at 11 distinct points. Had they travelled in same direction they would have met at 5 distinct points. If Raju who is fastest amoung two, can travel 1200m in 15 sec, then in what time can Ravi travell the same distance?
correct answer:-1
Anuj and Bharat start running towards each other simulatenously, starting from points P and Q, respectively. They meet somewhere in between and continue on their journeys to Q and P, respectively. Anuj reaches Q 4 hours after meeting Bharat. Given that it took Anuj 10 hours to reach Q from P, how much time did Bharat take to reach P from Q?
correct answer:-4
A train takes 20 seconds to cross a pole. It crosses a platform 1000 meters long in 100 seconds. What is the train's speed?
correct answer:-1
A train starts from Mumbai towards Bengaluru at a speed of 80 kmph. After half an hour, another train from Bengaluru starts running towards Mumbai at a speed of 100 kmph. Find the distance travelled by the slower train when both the trains meet if the distance between Mumbai and Bengaluru is 940 kms.
correct answer:-4
Three pipes A, B and C are connected to a tank. Out of the tree, A and B are tile inlet pipes and C is the outlet pipe If opened separately, A fills the tank in 10 hours and B fills the tank in 30 hours. If all three are opened simultaneously, it takes 30 minutes extra than if only A and B are opened. How much time does it take to empty the tank if only C is opened?
correct answer:-4
DIRECTION for the question: Solve the following question and mark the best possible option.
David and Michael together can finish a job in 4 days 19 hrs 12 min. If David works at two-thirds Michael's speed, how long does it take Michael alone to finish the same job?
correct answer:-3
Time required by two pipes A and B working separately to fill a tank is 36 seconds and 45 seconds respectively. Another pipe C can empty the tank in 30 seconds. Initially, A and Bare opened and after 7 seconds, C is also opened. In how much more time the tank would be completely filled?
correct answer:-2
The distance from Y to Z is thrice that from X to Y. Two trains A and B travel from X to Z via Y The speed of train B is double that of train A while traveling from X to Y and their speeds are interchanged while traveling from Y to Z. The ratio of the time taken by train A to that taken by train B in traveling from X to Z is?
correct answer:-1
A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds If the speed of the train is 54 km/hr what is the length of the platform? (in m )
correct answer:-2
DIRECTION for the question: Solve the following question and mark the best possible option.
A jogger running at 9 kmph alongside a railway track is 240 meters ahead of the engine of a 120 metre long train running at 45 kmph in the same direction. In how much time will the train pass the jogger?
correct answer:-1