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Solutions
Explanation :
Present age of Veena’s son = x
Veena’s present age = 3x
Veena’s present age = 2/5 of Father’s present age
Father’s present age = (15/2) x
Total present age = x + 3x + (15/2)x = 138
x = 12
Difference between Veena’s father’s present age and Veena’s son’s present age = 90 – 12 = 78 years.