Hire 20 people with 2$

Algebra Level pending

Suppose that you have 2$ to spend all to hire 20 people with provided as following
-> 0.1$ can hire three old persons
-> 0.3$ can hire two young persons
-> 20 cents can hire an adult person.
Question: How many old persons, young persons, and adult persons would be hired to get 20 persons with all 2$ spent?
Answer format: (number of old persons, number of young persons and number of adult persons without space)
e.g. 596 means 5 old persons, 9 young persons, and 6 adult persons.
Note: wrong format with the right answer can be wrong.


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