540 = 50x + 30x + 10x
90x = 540
x = 540:90
x = 6
50 • 6 = 300
30 • 6 = 180
10 • 6 = 60
300 + 180 + 60 = 540
Ответ: на 120
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540 = 50x + 30x + 10x
90x = 540
x = 540:90
x = 6
50 • 6 = 300
30 • 6 = 180
10 • 6 = 60
300 + 180 + 60 = 540
Ответ: на 120