Вопрос школьника по предмету Математика
Скорость полета утки 50 км/ч,что составляет 5/9 скорости полета дикого гуся , а скорость полета дикого гуся равна 5/7 скорости полета черного стрижа. Вычисли скорость полета черного стрижа ?
Ответ учителя по предмету Математика
1)50:5*9=
90(км/ч)2)90:5*7=
126(км/ч)
Ответ:126км/ч.
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