Adoontourious has an antique cuckoo clock. It’s a lovely clock, but it runs too slowly; it loses 9 minutes of time every hour. Mike visits his friend Adoontourious one day, and notices that the cuckoo clock is exactly on time at noon on Tuesday.
When is the next time Adoontourious’ clock will be exactly on time?
Answer
The clock will have to lose 12 hours (or 720 minutes) until it seems to be back “on time”. Losing 9 minutes every hour, the clock will take 80 hours (720 ÷ 9) to lose 12 hours. Eighty hours from noon on Tuesday will be 8:00 pm on Friday.
