Question

Father is is four times as old at his son . The difference in their ages is 30 years.
X + 4x = 30
x - 4x = 30
4x - x = 30​

Answer 1

Step-by-step explanation:

Let the age of father is x and that of son is y years

given, x=4y

or x- 4y= 0

as per condition 2, the age of the father at the time of birth of his son is 30 yrs.

thus the condition becomes x-y=30.

Answer 2

Answer:

Option C is your answer

Step-by-step explanation:

Let the age of father be 4x and son be x

ATQ,

4x - x = 30

or, 3x = 30

or, x = 30/3

or, x = 10

Therefore Father's age is 4×10 = 40 ans son's age is 10.

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