SOLUTION: At Jim's Cafe, 1/5 of the customers ordered tea. Six more than 2/5 of the customers ordered coffee, and 20 customers ordered soa.

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Question 260319: At Jim's Cafe, 1/5 of the customers ordered tea. Six more than 2/5 of the customers ordered coffee, and 20 customers ordered soa.
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
Let
Tea = (1/5)C
Coffee = (2/5)C + 6
Soda = 20
The total number of customers = C.
we get
%281%2F5%29C+%2B+%282%2F5%29C%2B6+%2B+20+=+C
multiply everything by 5 to get
C+%2B+2C+%2B+30+%2B+100+=+5C
subtract 3 C to get
130+=+2C
divide to get
C+=65 customers