Вопрос школьника по предмету Математика
сумма трех чисел равна 135 первое число составляет 15 процентов этой суммы второе число в три раза больше первого найдите третье число
Ответ учителя по предмету Математика
Ответ:
1)20.25 2)60.75 3)54
Пошаговое объяснение:
135-100%
1)х-15%
х=135*15/100
х=20.25 первое число
2) 20.25*3=60.75 второе число
3)135-(60.75+20.25)=135-81=54 третье число
Проверяем: 20.25+60.75+54=135
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