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There were total of 480 herbivores and carnivores in zoo X.
40% of these animals were herbivores.
When some herbivores were shifted to zoo Y, the percentage of herbivores in zoo X dropped to 25%.
(a) How many herbivores were shifted to zoo Y?
(b) Calculate the ratio of the number of herbivores to the number of carnivores in zoo X in the end.
Notes to student: