tayler1911
05.06.2021 •
Mathematics
Bruce is 4 times as old as Indy. 6 years ago, Bruce was 6 times as old as Indy. how old is bruce now?
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Ответ:
6(i-6) = b-6
6(i-6) = 4i - 6
6i - 36 = 4i - 6
2i - 36 = -6
2i = 30
i = 15 years old
b = 60 years old
Check:
15 * 4 = 60
9 * 6 = 54 :)
Ответ: