arivalen
17.07.2019 •
Mathematics
Bob is 6 years older than his sister, and the sum of their ages is 32, how old is bob?
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Ответ:
Sister is x+6 yrs old
X+X+6=32
2X+6=32
2X=32-6
2X=26
2X/2=26/2
X=13
Bob is 13 yrs old
Sister is 13+6 yrs
= 19 yrs
13yrs+19yrs = 32 yrs
Now its 100% accurate
Ответ:
D
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