Ben is 19 years old now
Solution:
Let the age of Ishaan be "x"
Given that ben is 12 years older than Ishaan
Therefore, age of ben = x + 12
Therefore, before three years,
Age of Ishaan before three years = x - 3
Age of Ben before three years = x + 12 - 3 = x + 9
From question,Three years ago, ben was 4 times as old as ishaan
Age of Ben before three years = 4(Age of Ishaan before three years)
x + 9 = 4(x - 3)
x + 9 = 4x - 12
4x - x = 9 + 12
3x = 21
x = 7
Therefore age of ben now = x + 12 = 7 + 12 = 19
Thus Ben is 19 years old now