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A and B are two points on a straight line. Ram runs from A to B while Rahim runs from B to A. After crossing each other, Ram and Rahim reach their destinations in one minute and four minutes, respectively. If they start at the same time, then the ratio of Ram's speed to Rahim's speed is
  • a)
    2
  • b)
    √2
  • c)
    2√2
  • d)
    1/2
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A and B are two points on a straight line. Ram runs from A to B while ...
Required ratio of speeds = Square root of inverse ratio of times taken after crossing each other. = √4 : √1 i.e., 2: 1 
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Most Upvoted Answer
A and B are two points on a straight line. Ram runs from A to B while ...
Let the distance between A and B be D.
Let Ram's speed be R and Rahim's speed be r.
Since Ram and Rahim cross each other, the total distance covered by both of them is D.
Using the formula: Speed = Distance / Time, we can write the following equations:

Ram's speed = D / 1 = D
Rahim's speed = D / 4 = D/4

The ratio of Ram's speed to Rahim's speed is:
R / r = D / (D/4) = 4/1 = 4

Therefore, the correct answer is:
b) 4
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