the age of jane and john add up to 25years.8years ago jane was twice as old as john.how old are they now?

1 answer

We physicists have trouble with this sort of thing.

ja + jo = 25

(ja - 8) = 2 (jo-8)
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well then

ja = (25-jo)
so
(25 - jo - 8) = 2 jo - 16

17 - jo = 2 jo -16

3 jo = 33

jo = 11
I guess ja = 25-11 = 14 then