Предмет: Математика, автор: dbrecbymrf

1.    
Сумма возрастов мужа, жены, дочери и сына составляет
73 года. Муж старше жены на три года. Дочь старше сына на два года. Четыре года
тому назад членам семьи было в сумме 58 лет. Сколько лет сейчас каждому члену
семьи?

Ответы

Автор ответа: tanya2512
0
Х лет жене
(Х+3) лет мужу
У лет сыну
(У+2) лет дочери
Х+Х+3+У+У+2=73 или Х+У=34
За 4 года возраст всех должен измениться на 4*4=16 лет, а в условии 73-58=15 лет. Значит младший сын тогда только родился и ему сейчас 3 года, тогда сестре 3+2=5 лет.
Соответственно жене 34-3=31 год, а мужу 31+3=34 года.
Ответ: 3, 5, 31, 34 года
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