Q.6 The ages of Hari and Harry are in the ratio 5:7. Four years from now the ratio of their ages will be 3:4. Find their present ages.
Let the present ages of Hari and Harry be 5x and 7x respectively.
(Since there are in the ratio of 5:7)
Four years from age of Hari will be = 5x + 4
and Harry's age will be = 7x + 4.
According to question four years from now, the ratio of their ages will be 3:4.
So the equation becomes :
4(5x + 4) = 3(7x + 4)
or 20x + 16 = 21x + 12
or x = 4
Hence present age of Hari = 5x = 20 and
present age of Harry = 7x = 28
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