Three workers

Three workers were rewarded CZK 9200 and the money divided by the work they have done. First worker to get twice than the second, the second three times more than the third. How much money each worker received?

Correct result:

a =  5520
b =  2760
c =  920

Solution:

a+b+c = 9200
a = 2b
b = 3c

a+b+c = 9200
a = 2•b
b = 3•c

a+b+c = 9200
a-2b = 0
b-3c = 0

a = 5520
b = 2760
c = 920

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