PK 2019 Q2
2. A model train takes exactly 1 minute and 11 seconds for one complete circuit of its track. How long does it take for six complete circuits?
- A 6 minutes and 56 seconds
- B 7 minutes and 6 seconds
- C 7 minutes and 16 seconds
- D 7 minutes and 26 seconds
- E 7 minutes and 36 seconds
Pink Kangaroo 2019, Question 2. © UK Mathematics Trust. Original paper on ukmt.org.uk
Answer: B 7 minutes and 6 seconds
Six circuits of 1 minute and 11 seconds take 6 minutes and 66 seconds. However, 66 seconds is 1 minute and 6 seconds, so the time taken is 7 minutes and 6 seconds.
Solution © UK Mathematics Trust, from the PK 2019 solutions.