Multiple choice

Pipe A is 4 times as fast as pipe B and takes 24 min less than pipe B to fill the tank. Find how much time will pipe B take to fill the tank?

  1. 28 minutes

  2. 32 minutes

  3. 16 minutes

  4. 40 minutes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let B's time be t minutes. Since A is 4 times as fast, A takes t/4 minutes. A takes 24 min less: t - t/4 = 24, so 3t/4 = 24 and t = 32. Option B (32 minutes) is correct.

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