Time and Distance (Objective Type Question for Competitive Exams) (Part C)

Time and Distance

Q.51 A man can row ¾th of a km against the stream in 11 ½ min. and return in 7 ½ min. Find his speed in still water.

(A) 1 km/ph

(B) 2 km/ph

(C) 5 km/ph

(D) none of these

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Q.52 A person can row 7 ½ km in still water. It takes him twice as long as to row up a distance as to row down the same distance. Find the speed of the stream.

(A) 1.5 km/ph

(B) 2.5 km/ph

(C) 5.5 km/ph

(D) 3.5 km/ph

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Q.53 A boat travels 10 km in 1 hr. downstream and 14 km in 2 hrs. upstream. Find how much time this boat will take to travel 17 km in still water.

(A) 1 hrs.

(B) 1 ½ hrs.

(C) 2 hrs.

(D) 2 ½ hrs.

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Q.54 A man can row with the stream 10 km per hour and against the stream at 5 km per hour. Man’s rate in still water is……

(A) 6 km/ph

(B) 2.5 km/ph

(C) 7.5 km/ph

(D) 15 km/ph

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Q.55 A man rows up the stream 11 km and down the stream 26 km taking 5 hrs. each time. The velocity of the current is….

(A) 3 km

(B) 2.5 km

(C) 5 km

(D) none of these

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Q.56 1 row from A to B against the current in 8 hours and from B to A in 2 hrs. If the speed of the river is 9 m/sec, what is the speed of the boat in still water?

(A) 15 m/sec

(B) 12 m/sec

(C) 36 m/sec

(D) 2.25 m/sec

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Q.57 A man rows 27 km with the stream and 15 km against the stream taking 4 hrs. each time. Find his rate per in still water.

(A) 5 km/ph

(B) 3 ¼ km/ph

(C) 5 ¼ km/ph

(D) 5 ½ km/ph

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Q.58 A man starts from B to K, another from K to B at the same time. After passing each either they complete their journey in 3 1/3 and 4 4/5 hrs. respectively. Find the speed of the second man if the speed of the first is 12 km/hrs.

(A) 8 km/hrs.

(B) 10 km/hrs.

(C) 15 km/hrs.

(D) 24 km/hrs.

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Q.59 A is faster than B. A and B each walk 24 km. The sum of their speed is 7 km/hrs. and the sum of time taken is 14 hours. A’s speed is….

(A) 4 km/ph

(B) 3 km/ph

(C) 5 km/ph

(D) 7 km/ph

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Q.60 A powder man set a fuse for a blast to take place in 30 sec. He ran away at a rate of 8 yards per second. Sound travels at a rate of 1080 ft. per sec. When the powder man heard the blast, he had run approximately.

(A) 250 yards

(B) 300 yards

(C) 245 yards

(D) 512 yards

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