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Question

A grandfather is ten times older than his granddaughter. He is also 54 years older than her. Find their present ages

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Solution

Let the granddaughter’s age be x years. Therefore, grandfather’s age will be

10x years.

According to the question,

Grandfather’s age = Granddaughter’s age + 54 years

10x = x + 54

Transposing x to L.H.S, we obtain

10xx = 54

9x = 54

x = 6

Granddaughter’s age = x years = 6 years

Grandfather’s age = 10x years = (10 × 6) years = 60 years


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