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NIELIT 2022 Feb Scientist D - Section C: 3

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The distance between two stations $\text{A}$ and $\text{B}$ is $450 \; \text{km}$. A train starts from $\text{A}$ and moves towards $\text{B}$ at an average speed of $15 \; \text{km/h} $. Another train starts from $\text{B, 20}$ minutes earlier than the train $\text{A}$, and moves towards $\text{A}$ at an average speed of $20 \; \text{km/h}$. How far from A will the two trains meet?

  1. $180 \; \text{km}$
  2. $320 \; \text{km}$
  3. $190 \; \text{km}$
  4. $260 \; \text{km}$
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NIELIT 2022 Feb Scientist D - Section C: 5
A clock gaining $3$ min every hour was synchronised at midnight with a clock losing $2$ min every hour. How many minutes the clock (losing time) will be behind at eleven in the following morning ? $11 \; \text{min}$ $55 \; \text{min}$ $22 \; \text{min}$ $33 \; \text{min}$
A clock gaining $3$ min every hour was synchronised at midnight with a clock losing $2$ min every hour. How many minutes the clock (losing time) will be behind at eleven ...
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