SOLUTION: The average age of our family of four is 35. Excluding me the average age is 40. Find my age.......? A) 22 B) 25 C) 20 D) 15

Algebra ->  Average -> SOLUTION: The average age of our family of four is 35. Excluding me the average age is 40. Find my age.......? A) 22 B) 25 C) 20 D) 15      Log On


   

Question 1057541: The average age of our family of four is 35. Excluding me the average age is 40. Find my age.......?
A) 22
B) 25
C) 20
D) 15
Found 2 solutions by math_helper, stanbon:
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
+4%2A35+=+140++ (sum of avg ages w/you)
++x%2F3+=+40+ (x = sum w/o you)
+x=+40%2A3+=+120+ (sum of avg ages w/o you)
The difference is 20 so that must be your age. So ans is C.

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The average age of our family of four is 35. Excluding me the average age is 40. Find my age.......?
A) 22
B) 25
C) 20
D) 15
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Sum of 4-family group = 4*35 = 140 yrs
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Sum of ages of 3-family group = 3*40 = 120
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Ans: My age = 140-120 = 20 yrs
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Cheers,
Stan H.
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