The average of four consecutive even numbers is 9. Find the largest number.

Question

Options:

A . 10

B . 8

C . 6

D . 12

Answer: Option D
Answer: (d)x + x + 2 + x + 4 + x + 6 = 9 × 4 ⇒ 4x + 12 = 36 ⇒ 4x = 36 – 12 = 24 ∴ x = $24/4$ = 6 ∴ Largest number = 6 + 6 = 12

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