IMC 2009 Q9
9. Joseph's flock has 55% more sheep than goats. What is the ratio of goats to sheep in the flock?
- A 9:11
- B 20:31
- C 11:20
- D 5:9
- E 9:20
Intermediate Mathematical Challenge 2009, Question 9. © UK Mathematics Trust. Original paper on ukmt.org.uk
Answer: B 20:31
The ratio of goats to sheep is 100:155 = 20:31.
Solution © UK Mathematics Trust, from the IMC 2009 solutions.