Предмет: Математика, автор: Аника130306

математика расстояние между двумя причалами 36 км .Сколько времени потратит на путь от одного причала до другого и обратно катер,если его собственная скорость 15 км/ч ,а скорость течения реки 3 км/ч?

Ответы

Автор ответа: ЛизокПесок

1)15+3=18(км|ч)- скорость карьера по реке;
2)36:18=2(ч)-туда;
3)2*2=4(ч);
Ответ: 4 часа потратит катер на путь от одного причал а до другого и обратно.

Автор ответа: torgovanova00

15+3=18 - собственная скорость катера + скорость течения реки. По течению катер это расстояние пройдет за 36, деленное на 18= 2 (ч), а путь против течения он пройдет за 36, деленное на 12= 3(ч), на весь путь катер затратит 5 часов - 3+2= 5(ч)

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