Multiple choice

If I walk at 4 km/hr, I miss the bus by 10 minutes.If I walk at 5 km/hr, I am 5 minutes early. How much do I walk to reach the bus stand?

  1. 3 km

  2. 5 km

  3. 4 km

  4. 6 km
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let distance be d km and correct time to reach bus stand be t hours. At 4 km/hr: time taken = d/4 hours, but we miss by 10 minutes, so d/4 = t + 10/60. At 5 km/hr: time taken = d/5 hours, and we're 5 minutes early, so d/5 = t - 5/60. Subtracting: d/4 - d/5 = 15/60 = 1/4, so d/20 = 1/4, giving d = 5 km.

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