The ratio of the number of chickens in Farm T to the number of chickens in Farm U was 7 : 9. There were 58 fewer chickens in Farm T than in Farm U. When 8 chickens escaped from Farm U, the farmer in Farm U bought another 20 chickens. What was the new ratio of the number of chickens in Farm T to the number of chickens in Farm U in the end? Give your answer in the simplest form.

	Farm T	Farm U
Before	7 u	9 u
Change 1		- 8
Change 2		+ 20
After	7 u	9 u + 12

Number of fewer chickens in Farm T than Farm U
= 9 u - 7 u
= 2 u

2 u = 58

1 u = 58 ÷ 2 = 29

Number of chickens in Farm T
= 7 u
= 29 x 7
= 203

Number of chickens in Farm U
= 9 u
= 29 x 9
= 261

New number of chickens in Farm U
= 9 u + 12
= 261 + 12
= 273

Farm T : Farm U
203 : 273 _{(÷ 7)}
29 : 39

Answer(s): 29 : 39