IMC 2012 Q5
5. How many minutes will elapse between 20:12 today and 21:02 tomorrow?
- A 50
- B 770
- C 1250
- D 1490
- E 2450
Intermediate Mathematical Challenge 2012, Question 5. © UK Mathematics Trust. Original paper on ukmt.org.uk
Answer: D 1490
The difference between the two given times is 24 hours 50 minutes. So the number of minutes that elapse is 24 × 60 + 50 = 1440 + 50 = 1490.
Solution © UK Mathematics Trust, from the IMC 2012 solutions. Longer versions with investigations: Solutions and investigations (PDF).