1180 crowns is divided into three people that A got 20% less than B and C by 15% more than B. How many got A,B and C?

Correct result:

A =  320
B =  400
C =  460


A+B+C = 1180
A = (1-20/100)•B
C = (1+15/100)•B

A+B+C = 1180
100A-80B = 0
115B-100C = 0

A = 320
B = 400
C = 460

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