Вопрос школьника по предмету Математика
за 6 год роботи 4 силосозбиральні комбайни заготовили 1560 т зеленої маси соняшнику. за скіліки годин може заготовити 520 т зеленої маси соняшнику один такий комбайн?
Ответ учителя по предмету Математика
1 комбайн за 6 часов заготовит 1560/4 = 390 т., за 1 час 390/6 = 65 т.
520 т один комбайн заготовит за 520/65 = 8 часов.
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