Multiple choice

15 years before A's age was 9/2of B's If the ratio of their present ages is 12 : 5, What is the average of their present ages ? 15 वर्ष पूर्व A की आयु ,B की आयु की 9/2 थी , यदि वर्तमान में दोनों की आयु में 12 : 5 का अनुपात हो , उनकी वर्तमान आयु का औसत क्या है ?

  1. 40.2

  2. 42.5

  3. 45.1

  4. 46.8

  5. None of these इनमें से कोई नहीं
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let present ages be 12x and 5x. 15 years ago: A was 12x-15, B was 5x-15. Given: 12x-15 = (9/2)(5x-15). Solving: 24x-30 = 45x-135, 21x = 105, x = 5. Present ages: 60 and 25. Average = (60+25)/2 = 42.5.

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