THE ANCIENT WIZARD ALBUS OWNS 3 ANCIENT CLOCKS OFPERPETUAL MOTION....
14. The Ancient Wizard Albus owns 3 ancient Clocks ofPerpetual Motion. Every day, Clock #1 runs 20 minutes fast;Clock #2 runs 30 minutes fast, and Clock #3 runs 40 minutesfast. He sets all three clocks to the correct time and leaves tovisit his friend. After many days, he returns home and, to hissurprise, finds all 3 clocks showing the correct time again! What is the fewest possible number of days Albus could havespent away from home?
Grade 5
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