Question

Q.29 :-Anita's mother is 5 years younger to her father. Presently her father is 4 times as old as she is. 5 years earlier her father was 7 times
as old as she was. When she was born, what was the age of her mother?
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Answer 1

Answer:

Let Arvind's age = x

Let Arvind's father age = y

Thus, y=4x

and, y−5=7(x−5) or y=7x−30

Thus, 4x=7x−30

3x=30 or x=10

Hence, y = 40 years

Thus, age of Arvind's father is 40 years.