the ratio of present ages of two girls is 3:5.five years ago, the ratio of thier ages was 1:2. find their present ages.
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let their present ages be 3x and 5x
so, 3x-5/5x-5 = 1/2
=> 6x-10=5x-5
=>6x-5x=10-5
=> x=5
Their present ages are 5×3=15, 5×5=25.
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