The distance from City A to City B is 180 miles.

Physics Calculator / Auto Solver

The distance from city a to city b is miles. While driving from city a to city b, bob drives at a constant speed of miles per hour. Alice leaves city a minutes after bob. What is the minimum constant speed in miles per hour that alice must exceed in order to arrive in city b before bob?

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Calculated Answer

45

Step by Step Solution

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

• n₀ / (n₀ / n₁ - n₂ / 60)

• Evaluate n₀ / n₁ = 4.5

  n₀ / (4.5 - n₂ / 60)

• Evaluate n₂ / 60 = 0.5

  n₀ / (4.5 - 0.5)

• Evaluate 4.5 - 0.5 = 4

  n₀ / 4

• Evaluate n₀ / 4 = 45

  45
• The answer to the problem and the result of n₀ / (n₀ / n₁ - n₂ / 60) is 45