Two identical trains AA and BB running in opposite direction at same speed tale 2 min to cross each ...

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Two identical trains aa and bb running in opposite direction at same speed tale min to cross each other completely. The number of bogies of aa are increased from to . How much more time would they now require to cross each other?

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Calculated Answer

20

Step by Step Solution

In order to solve problem, you must evaluate (n₀ * 60) / (n₁ + n₁) * (n₂ - n₁).

• (n₀ * 60) / (n₁ + n₁) * (n₂ - n₁)

• Evaluate n₀ * 60 = 120

  120 / (n₁ + n₁) * (n₂ - n₁)

• Evaluate n₁ + n₁ = 24

  120 / 24 * (n₂ - n₁)

• Evaluate 120 / 24 = 5

  5 * (n₂ - n₁)

• Evaluate n₂ - n₁ = 4

  5 * 4

• Evaluate 5 * 4 = 20

  20
• The answer to the problem and the result of (n₀ * 60) / (n₁ + n₁) * (n₂ - n₁) is 20