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Answer:
Your father's present is 40 years old.
Step-by-step explanation:
Let's father's age be x and ur age be y (present),
x - 4 = 4(y - 4)
x - 4 = 4y - 16
4y - x = 12...eqn i
x + y = 53...
x = 53 - y..eqn ii,
substituting eqn ii in eqn i,
4y - x = 12
or, 4y - (53 - y) = 12
or, 4y - 53 + y = 12
or, 5y = 53 + 12
or, 5y = 65
so, y = 13
now,
x = 53 - y
so, x = 53 - 13 = 40