Предмет: Математика, автор: КотикВася11

Помогите срочно пж!
Автомашина шла 3ч со скоростью 53,5 км/ч, 2ч со скоростью 62,3 км/ч и 4ч со скоростью 48,2 км/ч. Найди среднюю скорость движения автомашины на всем пути.
С решением. 30 балов и спасибо обеспечены.

Ответы

Автор ответа: 777Blatnoi777

1}3*53,5=160,5 км на первом участке

2}2*62,3=124,6 км на втором участке

3}4*48,2=192,8 км на тертьем участке

2+3+4=9 ч общее время

160,5+124,6+192,8=477,9 км весь путь

477,9/9=53.1 км/ч средняя скорость

Автор ответа: 777Blatnoi777

если не трудно поставь лойс

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