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11.
A car travels at the speed of 85 km/hr and reaches its destination in 5hours. What is the distance covered by the car?
  • A.
    425 km
  • C.
    325 km
  • B.
    485 km
  • D.
    450 km
  • Answer & Explanation
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Answer : [A]
Explanation :
Required distance = Speed x time = 85 x 5 = 425 km
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12.
Two trains traveling in opposite direction start from a station at the same time with the speeds of 40 kmph and 120 kmph respectively. Find the distance between them after 15 minutes.
  • A.
    20 km
  • C.
    40 km
  • B.
    60 km
  • D.
    25 km
  • Answer & Explanation
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Answer : [C]
Explanation :
Relative speed = 40 + 120 = 160 kmph =
160
60
 kmph  
 
Distance covered in 15 minutes =
160 x 15
60
=
16 x 15
6
 = 40 km  
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13.
In a race of 1 km, A beats by 1 minute, while B beats C by 40 seconds. If A beats C by 500 metres, What is the speed of C?
  • A.
    18 kmph
  • C.
    24 kmph
  • B.
    20 kmph
  • D.
    36 kmph
  • Answer & Explanation
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Answer : [A]
Explanation :
A beats C by 60 + 40 = 100 sec. or 500 metres

Speed of C =

500
100
 = 5 m/sec = 18 km/hr  
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14.
Ram started from his house and walked 2 km North, then 3 km West and finally 6 km South. How far is he from his house?
  • A.
    11 km
  • C.
    7 m
  • B.
    4 km
  • D.
    5 km
  • Answer & Explanation
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Answer : [D]
Explanation :
Let A -> starting point
DE = 4 km, AE = 3 km
 
AD = DE2 + AE2  = 9 + 16 = 25   = 5 km
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15.
Lamp posts are placed 30 meters apart along a road. How long will a car traveling at 45 km/hr take to pass 6 lamp posts, not counting the first of them?
  • A.
    13 seconds
  • C.
    10 seconds
  • B.
    11 seconds
  • D.
    12 seconds
  • Answer & Explanation
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Answer : [D]
Explanation :
Distance to be covered = 5 x 30 = 150 m
 
Time taken =
150
45 x 5/18
=
150
45 x 5
x 18 =
30 x 18
9 x 5
 = 12 sec.
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