a man weighed 77kg. he reduced his weight in the ratio 7:5. find his new weight
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let the his age be x
7:5
so it will
(7x +5x )- x = 77
= 12x - x = 77
x = 77/11
= 7
7:5
so it will
(7x +5x )- x = 77
= 12x - x = 77
x = 77/11
= 7
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