Question
Eight consecutive numbers are given. If the average of the two numbers that appear in the middle is 6, then the sum of the eight given numbers is
Answer: Option A Answer: (a)Let the first number be x. ∴ x + 3 + x + 4 = 2 × 6 ⇒ 2x + 7 = 12 ⇒ 2x = 5 ⇒ x =$5/2$ ∴ x + (x + 1) + ....... + (x + 7) = 8x + 28 = 8×$5/2$+ 28 = 20 + 28 = 48
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