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Rajni’s mother is 36 years old. She is 6 years older than three times Rajni’s age. Write an equation to find the age of Rajni’s mother (Take Rajni’s age to be n years.)

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3 n + 6 = 36 years

3 n + 6 = 28 years

3 n + 6 = 26 years

3 n + 6 = 35 years

answer is A.

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Detailed Solution

Given,
The mother’s age = 36 years.
Suppose that
Rajni’s age

= n years

Rajni is older than three times of her mother’s age = 6 years
So, three times the age of
Rajni’s mother age

= 3 n years

Now, the expression becomes
Rajni’s mother age

= 3 n + 6 years

……..(1)
Again, the age of Rajni’s mother is 36 years
So,

36 = 3 n + 6

\Rightarrow 3 n + 6 = 36 years

Therefore, the required expression of
Rajni’s mother is

3 n + 6 = 36 years .

Correct option is 1.

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