Multiple choice general knowledge math & puzzles

A pool has four taps. The first tap takes two days to fill the pool, the second tap three days, the third four days and the last one only 6 hours. How long will it take to fill the pool using all 4 taps at once? Round of answer to nearest High Minutes

  1. 3Hrs 43Mins

  2. 4Hrs 44Mins

  3. 3Hrs 44Mins

  4. 4Hrs 43Mins
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Calculating combined rates: Tap 1 = 1/2 pool per day, Tap 2 = 1/3 pool/day, Tap 3 = 1/4 pool/day, Tap 4 = 4 pools/day (since 6 hours = 0.25 days). Total rate = 0.5 + 0.333 + 0.25 + 4 = 5.083 pools/day. Time needed = 1/5.083 = 0.1966 days = 4.72 hours = 4 hours 43 minutes (rounded).

Keep practicing — related questions