Предмет: Математика, автор: Nika232425

Джавид и его брат Рауф вместе весят 68,4 кг. Вес Рауфа на 4,5 кг больше удвоенного веса Джавида. Найдите вес каждого мальчика
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Ответы

Автор ответа: 614283
0


Пусть Х-вес Джавида, тогда 2Х + 4,5 -вес Рауфа. Зная, что вместе они весят 68,4кг, составим уравнение

Х + 2Х + 4,5 = 68,4

3Х = 68,4-4,5

3Х =63,9

Х=21,3-вес Джавида

2 *21,3 +4,5 =47,1кг -вес Рауфа.

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