Two number in ratio 1:2 if 7 is added to both the ratio becomes 3:5 then the greater number is
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Ratio is 1:2 so let numbers are X and 2X
now ratio will be X / 2X
after adding 7 it will be
(X + 7) / (2X + 7)
and this will be equal to 3 : 5
means
(X + 7) / (2X + 7) = 3 : 5
5X + 35 = 6X + 21
X = 35-21 = 14
so greater value is 2X = 2× 14 = 28
now ratio will be X / 2X
after adding 7 it will be
(X + 7) / (2X + 7)
and this will be equal to 3 : 5
means
(X + 7) / (2X + 7) = 3 : 5
5X + 35 = 6X + 21
X = 35-21 = 14
so greater value is 2X = 2× 14 = 28
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