B
We are given that age ratio of tom and ram = 5 : 6
Tom’s age = 5x and Ram’s age = 6x
3 years ago, their age was 5x and 6x.
Hence at present, Tom’s age = 5x +3 and Ram’s age = 6x +3
After 12years,
Tom’s age = (5x +3) + 12 = (5x + 15)
Ram’s age = (6x +3) + 12= (6x + 15)
After 12years, this ratio becomes => 6 : 7. Therefore,
Tom’s Age/ram’s Age =6/7
(5x + 15) / (6x +15) = 6 / 7
7 (5x + 15) = 6 (6x + 15)
X = 15
Ram’s present age = (6x + 3) = 93years