The ratio of the number of chickens in Farm F to the number of chickens in Farm G was 3 : 7. There were 64 fewer chickens in Farm F than in Farm G. When 9 chickens escaped from Farm G, the farmer in Farm G bought another 14 chickens. What was the new ratio of the number of chickens in Farm F to the number of chickens in Farm G in the end? Give your answer in the simplest form.

	Farm F	Farm G
Before	3 u	7 u
Change 1		- 9
Change 2		+ 14
After	3 u	7 u + 5

Number of fewer chickens in Farm F than Farm G
= 7 u - 3 u
= 4 u

4 u = 64

1 u = 64 ÷ 4 = 16

Number of chickens in Farm F
= 3 u
= 16 x 3
= 48

Number of chickens in Farm G
= 7 u
= 16 x 7
= 112

New number of chickens in Farm G
= 7 u + 5
= 112 + 5
= 117

Farm F : Farm G
48 : 117 _{(÷ 3)}
16 : 39

Answer(s): 16 : 39