a) 6, 5 km/h b) 3, 1.5 km/h c) 8, 5 km/h d) 9, 3 km/h Answer: b Explanation: ...
View QuestionA boat covers 48 km upstream and 72 km downstream in 12 hours, while it covers 72 km upstream and 48 km downstream in 13 hours The speed of stream is
a) 2 kmph b) 2.2 kmph c) 2.5 kmph d) 4 kmph Answer: a Explanation: Let downstream speed ...
View QuestionA man can row 15 km/h in still water and he finds that it takes him twice as much time to row up than as to row down the same distance in the river. The speed of current (in km/h) :
a) 6 km/h b) 6.5 km/h c) 4.5 km/h d) 5 km/h Answer: d Explanation: Let the speed ...
View QuestionA man can cross a downstream river by steamer in 40 minutes and same by boat in 1 hour. If the time of crossing Upstream by streamer is 50% more than downstream time by steamer and the time required by boat to cross same river by boat in upstream is 50% more than time required by in downstream. What is the time taken for the man to cross the river downstream by steamer and then return to same place by boat half the way and by steamer the rest of the way?.
a) 85 minutes b) 115 minutes c) 120 minutes d) 125 minutes Answer: b Explanation: ...
View QuestionA hunter fired two shots from the branch of a tree at an interval of 76 seconds. A tiger separating too fast hears the two shots at an interval of 83 seconds. If the velocity of the sound is 1195.2 km/h, then find the speed of the tiger.
a) 112.8 km/h b) 100.8 km/h c) 80.16 km/h d) 85.16 km/h Answer: b Explanation: In the ...
View QuestionA car after traveling 18 km from a point A developed some problem in the engine and the speed became 4/5 th of its original speed. As a result, the car reached point B 45 minutes late. If the engine had developed the same problem after traveling 30 km from A, then it would have reached 36 minutes late. The original speed of the car (in km/h) is:
A car after traveling 18 km from a point A developed some problem in the engine and ...
View QuestionA motor car does a journey in 17.5 hours, covering the first half at 30 km/h and the second half at 40 km/h. Find the distance of the journey?
a) 684 km b) 600 km c) 624 km d) 584 km Answer: b Explanation: Let ...
View QuestionNarayan walking at a speed of 20 km/h reaches his college 10 minutes late. Next time he increases his speed by 5 km/h, but finds that he is still late by 4 minutes. What is the distance of his college from his house?
a) 10 km b) 6 km c) 12 km d) 15 km Answer: a Explanation: ...
View QuestionIf two incorrect watches are set at 12:00 noon at correct time, when will both watches show the correct time for the first time given that the first watch gains 1 min in one hour and second watch looses 4 min in two hours.
a) 6 PM, 25 days later b) 12 noon, 30 days later c) 12 noon, 15 days later d) 6 ...
View QuestionSabarmati express takes 18 seconds to pass completely through a station 162 m long and 15 seconds through another station 120 m long. The length of the train is :
a) 132 m b) 100 m c) 80 m d) 90 m Answer: d Explanation: Let length ...
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