Известно, что в кинозале фильм понравился 75процентам. сколько человек посмотрели фильм, если довольных вышло 300 человек,
gremorixiii
1
05.06.2019 04:50
1
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ответ: 400 человек
х - 100%
х=100*300/75=400 чел - посмотрели фильм