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Two trains leave New Delhi at the same time. One travels north at 60 Kmph and the other travels south at 40 Kmph. After how many hours will the train be 150 Km apart? 
1. \(\frac{3}2\)
2. \(\frac{4}3\)
3. \(\frac{3}4\)
4. \(\frac{15}2\)

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Correct Answer - Option 1 : \(\frac{3}2\)

Given:

One travels north at 60 Kmph and the other travels south at 40 Kmph.

Formula used:

Time = Distance/Speed

Calculation:

Trains running opposite direction,

Then both train speed must be add

Total speed = (60 + 40) kmph

Distance = 150 km

According to the question,

Time = 150/100

⇒ T = 3/2

∴ 3/2 hours will the train be 150 km apart.

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