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      Question

      The ratio of present ages of Alice and Bob is 5:7,

      respectively. Charlie, who is 3 years older than Alice, will become 40 years older after 12 years. Find the present age of Bob.
      A 45 years Correct Answer Incorrect Answer
      B 35 years Correct Answer Incorrect Answer
      C 30 years Correct Answer Incorrect Answer
      D 25 years Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ, Let, present ages of Alice and Bob be тАШ5xтАЩ years and тАШ7xтАЩ years respectively. So, 5x + 3 = 40 тАУ 12 5x = 25 x = 5 Present age of Bob = 7x = 35 years

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