in Quantitative Aptitude edited by
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Two boats, travelling at $5$ and $10$ kms per hour, head directly towards each other. They begin at a distance of $20$ kms from each other. How far apart are they (in kms) one minute before they collide?

  1. $1/12$
  2. $1/6$
  3. $1/4$
  4. $1/3$


in Quantitative Aptitude edited by
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1 Answer

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The boats together travel 10 + 5 = 15 km in 60 minutes.

In one minute they can travel=$\frac{60}{15}=\frac{1}{4}$km

They are $\frac{1}{4}$ km apart,one minute they collide


Hence,Option (3)$\frac{1}{4}$ is the correct choice.

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