Предмет: Алгебра, автор: КОКЕтОЧКА14

найдите число р,если 60% от р равны 6/7(это дробь) от 84.

Ответы

Автор ответа: Arseni

1) 84 : 7 х 6= 72 это 6/7 от 84

60 % - 72

100 % - р

р=72 х 100 :60=120

р=120

Автор ответа: GREENDEY

60% от - это 0,6р

6/7 от 84 - это 6/7 * 84

0,6р = 6/7 * 84 | * 7/6

0,7 р = 84

р = 84 : 0,7

р = 840 : 7

р = 120

Ответ: р = 120

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