Generate word problem on ratios suitable for grade 10
An aquarium has a total of 120 animals, out of which 40 are amphibians and the rest are fish. What is the ratio of amphibians to the total number of animals in the aquarium?
<START_INST>Generate word problem on ratios suitable for grade 10<END_INST><START_CTX><END_CTX><START_A>An aquarium has a total of 120 animals, out of which 40 are amphibians and the rest are fish. What is the ratio of amphibians to the total number of animals in the aquarium?<END_A>