SOLUTION: If the average of s and t is 25, and t is equal to the average of w and x, what is the value of 2s in terms of w and x? (A) 25 + w + x (B) 25 - w - x (C) 50 - w

SOLUTION: If the average of s and t is 25, and t is equal to the average of w and x, what is the value of 2s in terms of w and x? (A) 25 + w + x (B) 25 - w - x (C) 50 - w - x (D) 50- 2w -

Question 259684: If the average of s and t is 25, and t is equal to the average of w and x, what is the value of 2s in terms of w and x?
(A) 25 + w + x (B) 25 - w - x (C) 50 - w - x (D) 50- 2w - 2x (E) 100 - 2w - 2x

Found 3 solutions by stanbon, Fombitz, studant:
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
If the average of s and t is 25, and t is equal to the average of w and x, what is the value of 2s in terms of w and x?
---------------------------------
(s + t)/2 = 25
So, s+t = 50
----------------------------
t = (w+x)/2
---
Substitute for "t" and solve for "s":
s + (w+x)/2 = 50
2s + w + x = 100
2s = [100 -w -x]
------------------------
Cheers,
Stan H.

(A) 25 + w + x (B) 25 - w - x (C) 50 - w - x (D) 50- 2w - 2x (E) 100 - 2w - 2x

Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!

1.
.
.

2.
From eq. 1,

Then using eq. 2,

None of the above.
.
.
.
As a supporting example,
let , ,
let , ,
then

so that equation is correct.
The answer should be

Answer by studant(1)   (Show Source): You can put this solution on YOUR website!
Inf to the fourth power divided by 2
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