Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
If one Burmese python can eat one 50-cm alligator per week, how many Burmese pythons would it take to eat fifteen 50-centimeter alligators in three weeks?

### Response:
15 alligators eaten over a period of 3 weeks is a rate of 15/3=<<15/3=5>>5 alligators per week.
Under the normal rate of 1 alligator per week, it would take 5/1=<<1*5=5>>5 pythons to eat 15 alligators in 3 weeks.
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