A man goes to his office at a speed of 30 km/hr and return to home at a speed of 45 km/hr. If he takes total 10 hours in all then, what is the distance between his office to home ? 120 km 180 km 340 km 220 km 200 km Option B Let distance = D kmD/30 – D/45…
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‘x’ meters long train cross a 360 meters long bridge in 20 sec running at the speed of 108 km/hr. If train cross a man running in opposite direction in 6 sec, then what is the speed of man (in km/hr) ? 54 km/hr 58 km/hr 36 km/hr 45 km/hr 72 km/hr Option C speed of train = 108 *…
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A train running at the speed of 90 kmph passes a pole in 10 sec, in how much time the train can cross 350m long another train B, which running opposite direction with the speed of 180 kmph. 10 sec 8 sec 12 sec 15 sec 20 sec Option B length of the train=90*5/18*10=250 mspeed of train=90*5/18=25 m/secspeed of another…
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Two trains ,one from Haldia to Pritampur, and the other from Pritampur to Haldia,starts simultaneously.After they meet,the trains reach their destinations after 9 hours and 16 hours respectively.What is the ratio of their speeds? 2:3 3:5 4:3 5:7 None of these Option C Let trains be x and y.(X speed):(Y speed) = square root of x:square root of y …
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Neelaksh is standing on a bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds but himself in 8 seconds. Find the speed of the train? 54 kmph 42 kmph 45 kmph 51 kmph None of these Option A A/8 =( A + 180) / 20 = 20A = 8(A + 180) =…
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Latha and Vinoth are travelling from the cities A and B, Which are 120 km apart .Latha takes 1 hour more than Vinoth to reach the city B at a particular speed. If Latha doubles her speed the she will take 30 minutes less than Vinoth to reach the city B. Find the speed of Latha travels from the city…
Read MoreA person sees a train passing over 3km long bridge. The length of the train is half that of bridge if the train clears the bridge in 4mins. What is the speed of the train ? 67.5 km/hr 50 km/hr 62 km/hr 48 km/hr None of these Option A Distance covered in 4/60 hours = (3 + 3/2) = 9/2…
Read MoreIn eleven hours A walks 12.5 km less than what B does in twelve hours and in five hours B walks 3.25 km less than what A does in seven hours. How many km does each walk per hour? 3.25km/hr , 4. 5km/hr 3 km/hr , 4km/hr 3.5km /hr, 4.25km/hr 2.25km/hr , 3. 5km/hr None Option C Solution: Let speed…
Read MoreTwo trains running in opposite directions cross a man standing on the platform in 21 seconds and 15 seconds respectively and they cross each other in 19 seconds. The ratio of their speeds is 1:2 2:1 2:3 3:2 None Option B Solution: Let the speeds of the two trains be x m/sec and y m/sec respectively. length of the first…
Read MoreWithout any stoppage a person travels a certain distance at an average speed of 50 km/hr and with stoppages he covers the same distance at an average speed of 40 km/hr. How many minutes per hour does he stop? 20min 18min 24min 15min None Option B Solution: Let the total distance be x km. Time taken at the speed of…
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