1.  Two men starting from the same place walk at the rate of 5 km/hr and 5.5 km/hr respectively. What time will they take to be 8.5 km apart, if they walk in the same direction?


4 hrs 15 min
8 hrs 30 min
16 hrs
17 hrs


Answer

 Option

To be 0.5 km apart, they take 1 hour. To be 8.5 km apart, they take (1/0.5*8.5) hrs = 17 hrs.

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2.  A is twice as fast as B and B is thrice as fast as C is. the journey covered by C in 54 minutes will be covered by B in?


18 min
27 min
38 min
9 min


Answer

 Option

Let C's speed = x km/hr. then, B's speed = 3x km/hr and A 's speed = 6x km/hr. Hence, ratio of speed of A,B,C = 6x : 3x : x = 6 : 3: 1. Ratio of times taken = 1/6 : 1/3 : 1= 1 : 2 : 6. If C takes 6 min., then B takes 2 min. If C takes 54 min., then B takes (2/6*54) min. = 18 min.

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3.  If a person walks at 14 km/hr instead of 10km/hr, he would have walked 20km more. the actual distance traveled by him is?


50 km
56 km
70 km
80 km


Answer

 Option

Let the actual distance traveled be x km then x/10 = x+20/14 14x = 10x+200 4x = 200 x = 50 km

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4.  2 men start together to walk to a certain destination, one at 3 km/hr and another at 3.75 km/hr.The later arrives half an hour before the former.The distance is?


6 km
7.5 km
8 km
9.5 km


Answer

 Option

Let the distance be x km then x/3- x/3.75 = 1/2 = 2.5x - 2x = 3.75 x = 3.75/0.50 = 15/2 = 7.5km

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5.  With a uniform speed a car covers the distance in 8 hours.Had the speed been increased by 4km/hr, The same distance could have been covered in 7 1/2 hrs.What is the distance covered?


420 km
480 km
640 km
None of these


Answer

 Option

Let the distance be x km then x/7 1/2 - x/8 =4 = 2x/15 - x/8 = 4 = x = 480km

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