Предмет: Алгебра, автор: gauhara81

между двух гавани состоит 55,4 км, лодка переплыл между двух гавани с течением 2 часа, скорость течения 2,8 км/ч, надо найти скорость лодки

Ответы

Автор ответа: nafanya2014

скорость лодки х км в час
скорость по течению (х+2,2) км в час
2·(х+2,2)=55,4
Ответ х= 24,9 км в час

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