karan-s
karan-s
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let it be x yrs. then 48+x=4(3+x); 48+x=12+4x; 48-12=4x-x; 36=3x; x=12; thus after 12 yrs sharon will be 60 & sam 15yrs. 60=4*15; hence after 12yrs sharon will be 4 times sam's age