Question
The ratio of the number of hens in Farm Y to the number of hens in Farm Z was 5 : 7. There were 66 more hens in Farm Z than in Farm Y. When 7 hens escaped from Farm Z, the farmer in Farm Z bought another 18 hens. What was the new ratio of the number of hens in Farm Y to the number of hens in Farm Z in the end? Give your answer in the simplest form.
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The ratio of the number of hens in Farm Y to the number of hens in Farm Z was 5 : 7. There were 66 more hens in Farm Z than in Farm Y. When 7 hens escaped from Farm Z, the farmer in Farm Z bought another 18 hens. What was the new ratio of the number of hens in Farm Y to the number of hens in Farm Z in the end? Give your answer in the simplest form.