Вопрос школьника по предмету Математика
Надя и Полина идут навстречу друг другу. Скорость Нади 4 целых 1/2 км/ч, скорость Полины 3 целых 3/4 км/ч. С какой скоростью они сближаются?
Ответ учителя по предмету Математика
Ответ:
1) 4+1/2+3+3/4=7+0,5+0,75=8,25(км/ч) — общая скорость
Ответ:8,25 км/ч.
примечание:
1/2=0,5
3/4=0,75
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