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What is the average of x and y?
1. x + y = 20
2. 2x + 4y = 54
1. x + y = 20
2. 2x + 4y = 54
The average of x and y is given by (x + y)/2.BTGmoderatorDC wrote:What is the average of x and y?
1. x + y = 20
2. 2x + 4y = 54
Let's take each statement one by one.
1. x + y = 20
=> (x + y)/2 = 20/2 = 10. Sufficident.
2. 2x + 4y = 54
=> x + 2y = 27. Can't get the unique value of (x + y)/2. Insufficient.
The correct answer: A
Hope this helps!
-Jay
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