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Earn 100
Two people A and B start moving from P and Q that are km apart, towards each other A is on a moped and B on foot. They meet at a point R when A gives B a lift to P and returns to his original path to reach Q. On reaching Q he finds that he has taken times his normal time. B on the other hand realises that he has saved minutes over his normal travel time. Find the speed of the moped.
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Important Questions on Time, Speed and Distance
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A motorboat moves from point A to point B and back again, both points being located on the river bank. If the speed of the boat in still water is doubled, then the trip from A to B and back again would take of the time that the motorboat usually spends in the journey. How many times is the actual speed of the launch higher than the speed of the river flow?
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A watch loses time during the week and gains time during the next week. If on a Sun- day noon, it showed the right time, what time will it show at noon on the Sunday after the next.
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Clocks A, B and C strikes every hour. B slows down and takes min longer than A per hour while C become faster and takes min less than A per hour. If they strike together at midnight, when will they strike together again
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A boat went down the river for a distance of km. It then turned back and returned to its starting point, having travelled a total of hours. On its return trip, at a distance of km from the starting point, it encountered a log, which had passed the starting point at the moment at which the boat had started downstream. The downstream speed of the boat is
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Two boats go downstream from point X to point Y. The faster boat covers the distance from X to Y times as fast as the slower boat. It is known that for every hour the slower boat lags behind the faster boat by km. However, if they go upstream, then the faster boat covers the distance from Y to X in half the time as the slower boat. Find the speed of the faster boat in still water.
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At the ancient Athens Olympic games, in a duel between two runners, Portheus and Morpheus, they were made to start running in opposite direction from diametrically opposite ends of a circular race track of length (circumference) kms. The first time they met was after minutes. If the distance between them exactly 'n' minutes after they start is equal to a quarter of the length of the track, which of the following is a possible value of 'n'?
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Aman and Biman started a walkathon around a circular track starting from the same point on the track in opposite directions. They met for the first after time 't'. Had they walked in the same direction with their speeds intact, they would have met after a time '. It was also observed that Aman was slower than Biman, and Aman's speed was measured at kmph. Find the speed of Biman.
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Abhishek and Aiswarya start from two opposite ends of a tunnel AB, which is meters in length. Abhishek starts from A and Aiswarya starts from B. After they meet, they continue moving in their respective directions, till one of them reaches his end point and immediately reverses direction and starts walking back towards the other end. The ratio of their speeds is . At what distance (in metres) from A will they meet when Abhishek is in his round?
