Вопрос школьника по предмету Математика
В 5 классе 12 человек учатся на тройки ,а на «4» и «5» учатся 15 человек. Сколько процентов учеников в классе учатся на «3»,и сколько на «4» и «5»?
Ответ учителя по предмету Математика
Всего в классе: 12+15 = 27
27 = 100%
12 = х%
х = 12*100/27 = 44,4 % (примерный процент учащихся на три)
100% — 44,4% = 55,6 % (процент учащихся на четыре и пять)
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