Given age ratios calculated through a span of 10 years.( before 6 and after 4) Difference between ratio numbers is 6:5 and 11:10 is 11-6=10-5=5 Means for a span 10, the difference is taken as 5 Means multiplication factor is 2 So age 6 years and 10 Age 4 years hence: 22 and 20 So present ages are 18 and 16 Present age of sagar 16