CBSE 10th Class Mathematics
Past year question paper
Year 2020
SET 1, Code Number – 30/5/1
Question Number – 27 [b]
logical reasoning problem
age relation between father and son
Deepak BoraNewbie
The present age of a father is three years more than three times the age of his son. Three years hence the father’s age will be 10 years more than twice the age of the son. Determine their present ages.
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Let the present age of son be ‘x’ years
As per question,
3x + 6 = 10 + 2 (x + 3)
3x + 6 = 10 + 2x + 6
x = 10
Father’s present age = 3x + 3
= 3 × 10 + 3 = 33
Present age of son = 10 years
Present age of father = 33 years