SOLUTION: If the avgrage of A&B equals 30 and C&D equals 20 Then The avg of B&C must be greater than 25 (T/F)..??? else The avg of A&D must be lesser than 20 (T/F)..???

Algebra ->  Average -> SOLUTION: If the avgrage of A&B equals 30 and C&D equals 20 Then The avg of B&C must be greater than 25 (T/F)..??? else The avg of A&D must be lesser than 20 (T/F)..???      Log On


   

Question 841343: If the avgrage of A&B equals 30 and C&D equals 20
Then
The avg of B&C must be greater than 25 (T/F)..???
else
The avg of A&D must be lesser than 20 (T/F)..???
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If the avgrage of A&B equals 30 and C&D equals 20
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Since (A+B)/2 = 30, A+B = 60
Since (C+D)/2 = 20, C+D = 80
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Then
The avg of B&C must be greater than 25 (T/F)..???
False: B & C could both be 1
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else
The avg of A&D must be less than 20 (T/F)..???
False: If B and C are both 1, A+D = 138 and their
average would be 69
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Cheers,
Stan H.