Ответ : уменьшили на 42 6/7%
1400 - 100%,
600 - х%,
х=600×100/1400=600/14=42 6/7 %
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Ответ : уменьшили на 42 6/7%
1400 - 100%,
600 - х%,
х=600×100/1400=600/14=42 6/7 %