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In a coaching batch of 35 students the average age is 12 years. When the coach's age is added, the average rises by 1 year. How old is the coach (in years)?

Competition practiceAverages & Ages
  • A48
  • B47
  • C49
  • D36

Step-by-Step Solution

New total = . Students' total = . Coach's age = 468 − 420 = 48.
Answer: A) 48

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