Aman’s age is three times his son’s age. Ten years ago he was five times his son’s age. Find their present ages.

Let the present age of Amon’s son be x years.
Therefore, Aman’s age = 3x years
According to question,
3x-10=5(x-10)
⇒ 3x-10=5x-50
⇒ 3x-5x=-50+10
⇒ -2x = -40
⇒ x=-40/-2 =20years
Hence, Aman’s son’s age = 20 years and Aman’s age = 3 x 2 = 60 years

Class 8 Maths Chapter 2 Exercise 2.4 Solution in Video

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