VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – QUESTION 3 : Grenville thinks of 7 consecutive numbers. The sum of the smallest three is 33. What is the sum of the largest three? (A) 36, (B) 39, (C) 42, (D) 45, (E) 48.
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VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – ANSWER 3 : D. Sum of the smallest 3 consecutive numbers = X + (X + 1) + (X + 2) = 33, X = 10 = smallest number. So the 7 consecutive numbers are 10, 11, 12, 13, 14, 15, 16. Sum of largest 3 = 14 + 15 + 16 = 45.
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