a) 66 km/hr b) 72 km/hr c) 76 km/hr d) 81 km/hr Answer: d Explanation: $$\eqalign{ & 4.5\,{\text{km/hr}} = \left( ...
View QuestionA train overtakes two persons who are walking in the same direction in which the train is going, at the rate of 2 kmph and 4 kmph and passes them completely in 9 and 10 seconds respectively. The length of the train is:
a) 45 m b) 50 m c) 54 m d) 72 m Answer: b Explanation: $$\eqalign{ & 2\,kmph ...
View QuestionTwo trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train?
a) 23 m b) $$23\frac{2}{9}$$ m c) $$27\frac{7}{9}$$ m d) 29 m Answer: c Explanation: $$\eqalign{ & {\text{Relative}}\,{\text{speed}} = \left( ...
View QuestionA train 110 metres long is running with a speed of 60 kmph. In what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?
a) 5 sec b) 6 sec c) 7 sec d) 10 sec Answer: b Explanation: $$\eqalign{ & {\text{Speed}}\,{\text{of}}\,{\text{train}}\,{\text{relative}}\,{\text{to}}\,{\text{man}} ...
View QuestionTwo trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is:
a) 9 b) 9.6 c) 10 d) 10.8 Answer: d Explanation:$$\eqalign{ & {\text{Relative}}\,{\text{speed}} = \left( {60 + 40} \right)\,{\text{km/hr}} \cr & ...
View QuestionTwo trains, each 100 m long, moving in opposite directions, cross each other in 8 seconds. If one is moving twice as fast the other, then the speed of the faster train is:
a) 30 km/hr b) 45 km/hr c) 60 km/hr d) 75 km/hr Answer: c Explanation: $$\eqalign{ & {\text{Let}}\,{\text{the}}\,{\text{speed}}\,{\text{of}}\,{\text{the}}\,{\text{slower}}\,{\text{train}}\,{\text{be}}\,x\,{\text{m/sec}} \cr & {\text{Then,}}\,{\text{speed}}\,{\text{of}}\,{\text{the}}\,{\text{faster}}\,{\text{train}} ...
View QuestionA goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the goods train?
a) 230 m b) 240 m c) 260 m d) 270 m Answer: d Explanation: $$\eqalign{ & {\text{Speed}} ...
View QuestionA 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train?
a) 230 m b) 240 m c) 260 m d) 320 m Answer: a Explanation: $$\eqalign{ & ...
View QuestionA train running at a speed of 90 km/hr crosses a platform double its length in 36 seconds. What is the length of the platform in meters?
a) 200 b) 300 c) 450 d) None of these Answer: d Explanation:$$\eqalign{ & {\text{Let the length of the train ...
View QuestionA train running at the speed of 60 kmph crosses a 200 m long platform in 27 seconds. What is the length of the train?
a) 200 meters b) 240 meters c) 250 meters d) 450 meters Answer: c Explanation:$$\eqalign{ & {\text{Speed}} = \left( {60 ...
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