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NIELIT 2022 Feb Scientist C - Section D: 1

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Two men $\text{X}$ and $\text{Y}$ start from a place walking at $5.5 \; \text{km/h}$ and $6 \; \text{km/h}$ respectively. What is the time they will take to be $69 \; \text{km}$ apart, if they walk in opposite directions?

  1. $6$ hours
  2. $8$ hours
  3. $11.5$ hours
  4. $6$ hours $45$ minutes
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