The ratio of the number of chickens in Farm M to the number of chickens in Farm N was 7 : 9. There were 44 more chickens in Farm N than in Farm M. When 5 chickens escaped from Farm N, the farmer in Farm N bought another 17 chickens. What was the new ratio of the number of chickens in Farm M to the number of chickens in Farm N in the end? Give your answer in the simplest form.

	Farm M	Farm N
Before	7 u	9 u
Change 1		- 5
Change 2		+ 17
After	7 u	9 u + 12

Number of more chickens in Farm N than Farm M
= 9 u - 7 u
= 2 u

2 u = 44

1 u = 44 ÷ 2 = 22

Number of chickens in Farm M
= 7 u
= 22 x 7
= 154

Number of chickens in Farm N
= 9 u
= 22 x 9
= 198

New number of chickens in Farm N
= 9 u + 12
= 198 + 12
= 210

Farm M : Farm N
154 : 210 _{(÷ 14)}
11 : 15

Answer(s): 11 : 15