Since Ryan composes twice as many problems as Bill's total of 20, this means Ryan composes 20*2=<<20*2=40>>40 problems

Frank composes 3 times as many as Ryan does, so this means Frank composes 40*3=<<40*3=120>>120 problems.

Since Frank needs to submit 4 types of problems in equal proportion out of his total, this means he needs to make 120/4= <<120/4=30>>30 problems of each type.

# Answer

30
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Bill composes 20 total math questions for money.  Ryan composes twice as many problems as Bill, and Frank composes 3 times as many as Ryan.  Assuming each person has to compose 4 different types of math problems in equal proportion out of the total amount, how many problems of each type does Frank compose?
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30
Bill composes 20 total math questions for money.  Ryan composes twice as many problems as Bill, and Frank composes 3 times as many as Ryan.  Assuming each person has to compose 4 different types of math problems in equal proportion out of the total amount, how many problems of each type does Frank compose?
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