If the sum of (3, 7 and x) is 18, then the average of (3, 7 and x) is
Solution
Correct Answer: Option A
Sum of 3, 7, and x = 18
⇒ 3 + 7 + x = 18
⇒ 10 + x = 18
⇒ x = 8
Average = (3 + 7 + 8) / 3 = 18 / 3 = 6
⇒ 3 + 7 + x = 18
⇒ 10 + x = 18
⇒ x = 8
Average = (3 + 7 + 8) / 3 = 18 / 3 = 6
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