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1. If 2x + 2y = 7z, then what is the average of x, y and z?
- A. 1.5z
- B. 1.5z
- C. 1.5z
- D. 1.5z
Answer: Option A
Explanation:
Given that, 2X + 2Y = 7Z
So, X + Y = (7/2) Z
Now, average = (X + Y + Z)/ 3 = { (7/2)Z + Z} /3 = 9Z/6 = 1.5 Z
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