IB ACIO Grade II previous year question
Two years ago, average age of A, B, C was 23. After 2 years from now, average age of A and C will be 14. What will be B's age 7 years from now?
Asked in IB ACIO Grade II (16 Sep 2025 Shift 3) · Quantitative Aptitude
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Correct answer: (D) 58
2 yrs ago, A+B+C = 69, so now A+B+C = 69+6 = 75. In 2 more years, A+C = 28, so now A+C = 24. So B now = 75−24 = 51. B in 7 years = 51+7 = 58.
हिंदी में प्रश्न
अब से दो वर्ष पहले, A, B और C की औसत आयु 23 वर्ष थी। अब से 2 वर्ष बाद, A और C की औसत आयु 14 वर्ष होगी। अब से 7 वर्ष बाद, B की आयु (वर्षों में) कितनी होगी?
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सही उत्तर: (D) 58
2 वर्ष पूर्व, A+B+C = 69, अतः अभी A+B+C = 69+6 = 75। 2 वर्ष बाद, A+C = 28, अतः अभी A+C = 24। अतः B अभी = 75−24 = 51। 7 वर्ष बाद B = 51+7 = 58।
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