MAH MBA CET Speed Time Distance Work Questions

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.

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.)

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?

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?

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?

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?

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.

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?

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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?

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?

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?

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 )

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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?

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Two pipes A and B can fill a tank in 15 hours and 20 hours respectively while a third pipe C can empty the full tank in 25 hours. All the three pipes are opened in the beginning. After 10 hours, C is closed. In how much time will the tank be full?

There are two concentric circular tracks of radii 100m and 102m respectively. A runs on the inner track and goes once round the track in 1 minute 30 seconds while B runs on outer track in 1 minute 32 seconds. Who runs faster and at what speed ?

In a 5000-meter race, if runner A runs at a speed of 12 meters per second and runner B runs at a speed of 15 meters per second, how many seconds will it take for runner B to finish the race if runner A finishes the race in 20 minutes?