IMC 2006 Q8
8. Sydney flew to Melbourne, Australia. The flying time to Melbourne, which is 11 hours ahead of Britain, was 21 hours. Sydney's flight left London at 11.30am on Tuesday. What time was it in Melbourne when Sydney's flight arrived?
- A 9:30pm on Tuesday
- B 8:30am on Wednesday
- C 7:30pm on Wednesday
- D 6:30am on Thursday
- E 7:30pm on Thursday
Intermediate Mathematical Challenge 2006, Question 8. © UK Mathematics Trust. Original paper on ukmt.org.uk
Answer: C 7:30pm on Wednesday
The clock time in Melbourne when Sydney arrived was 32 hours (one complete day and 8 hours) ahead of the clock time in London when he left. So he arrived at 7:30 pm on Wednesday.
Solution © UK Mathematics Trust, from the IMC 2006 solutions.