Find the product of the age of Virat before 7 years and after 7 years is 480. Find his present age.

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answer is A.

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Detailed Solution

Concept: The concept or approach is the creation of equations using the information from the given data set. These questions also provide conditions that are essential for formulating the equations. Continue with the answer while treating the unknown quantity like any other variable.
Seven years ago age of Virat is =(x-7) years
After 7 years the age of Virat is = (x+7) years
Given that Virat's age before and after seven years equals 480, Simply record the equations that result from the stated conditions.
Age of Virat seven years ago × age seven years later = 480.
Simply change the values in the aforementioned equation, and we get,
Question Image

We have two responses, one of which has a plus sign and the other a minus sign. However, since we are aware that age cannot have a negative value, our final response is positive and contains the number x.
Hence, the correct answer is option 1.

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