Question

My age is 3 times the difference of my age after 3 years and my age four
years back. How old am I?

Answer 1

Answer:

=28 years

Step-by-step explanation:

age after 4 yrs = (x+4)

age before 3 yrs = (x-3)

difference = (x=4)-(x-3) = x+4-x+3=7

age=4x7=28yrs

Answer 2

SOLUTION

GIVEN

My age is 3 times the difference of my age after 3 years and my age four years back.

TO DETERMINE

The age

EVALUATION

Let present age = x

Age after 3 years = x + 3 years

Age before 4 years = x - 4 years

Difference

= ( x + 3 ) - ( x - 4 )

By the given condition

x = 3 [ ( x + 3 ) - ( x - 4 ) ]

⇒ x = 3 [ x + 3 - x + 4 ]

⇒ x = 3 × 7

⇒ x = 21

FINAL ANSWER

Hence the age = 21 years

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