present age of Hina and Sonal are 15 years and 20 years respectively after how many years the ratio of their ages will become 6:7
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15/20=3/4=3:4
3/4=6/7
=3 years
3/4=6/7
=3 years
virdimanrajsingh9:
how you got 3 years after3/4=6/7
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