Multiple choice

The product of John's age 7 years ago with his age 2 years later is 52. Then John's present age is 7 वर्ष पहले जॉन की आयु 2 वर्ष बाद की आयु का गुणनफल 52 है। तो जॉन की वर्तमान आयु क्या है?

  1. 10 years/ वर्ष

  2. 11 years/ वर्ष

  3. 12 years/ वर्ष

  4. 15 years/ वर्ष
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B Correct answer
Explanation

Let John's present age be x years. Then (x-7)(x+2) = 52, which expands to x² - 5x - 66 = 0. Solving this quadratic gives (x-11)(x+6) = 0, so x = 11 years (age cannot be negative).

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