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Linear Equations in One Variable
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05/08/2021 12:38 pm
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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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05/08/2021 12:40 pm
Let the age of granddaughter be x and grandfather be 10x.
Also, he is 54 years older than her.
According to the question, 10x = x + 54
⇒ 10x – x = 54
⇒ 9x = 54
⇒ x = 6
Age of grandfather = 10x
= 10 × 6 = 60 years.
Age of granddaughter = x = 6 years.