Предмет: Математика, автор: marisha341

Велосипедист стал догонять пешехода, когда между ними было 2,1 км, и догнал его через 0,25 часа. Найдите скорость велосипедиста и скорость пешехода ,если скорость пешехода была в 3,4 раза меньше скорости велосипедиста.

Ответы

Автор ответа: Катя765

Скорость пешехода - х км/ч

Тогда скорость велосипедиста - 3.4х км/ч

Скорость приближения велосипедиста (3.4х - х) км/ч

По условии задачи, можна составить уравнение:

(3,4х-х)*0,25 =2.1
2,4х*0,25 =2.1
0,6х=2.1
х = 3.5 (км/ч) -скорость пешехода
3.4*3.5 = 11.9 (км/ч)

Ответ: 3.5 км/ч и 11.9 км/ч

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