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Q.

Pravallika is in class 5. She is ten years old. Her father’s age is 4 times her age. Find the age of her father.

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a

44 years

b

40 years

c

32 years

d

42 years

answer is B.

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Detailed Solution

Concept- Assume the age of Pravallika to be x years and her father’s age to be y years. Form an equation as per the condition given in question.
Let the age of Pravallika to be x years
Let the age of her father to be y years
Given: Pravallika’s age = 10 years
Her father’s age is 4 times of her age
Equation so formed is:-

y = 4 x

\Rightarrow y = 4 \times 10

\Rightarrow y = 40

So, the age of Pravallika’s father is 40 years.
Hence, the correct option is 2.

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