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The average ages of 4 member, each having the age difference of 2yrs is 54 yrs.What is the sum of the youngest and oldest family member ?
  • a)
    102
  • b)
    105
  • c)
    107
  • d)
    108
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The average ages of 4 member, each having the age difference of 2yrs i...
Answer – D) 108 Explanation : X+X+2+X+4+X+6 = 54*4 = 216
4X+12 = 216
X = 216-12/4 =51
X+6 = 51+6 = 57
Required = 51+57 = 108
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Most Upvoted Answer
The average ages of 4 member, each having the age difference of 2yrs i...
Let's say ages be x y z and w
y=x-2
z=x-4
w=x-6
now average is
x+x-2-6-4+x+x/4=54
4x-12=216
x=57
w=57-6=51
sum is 57+51=108
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Community Answer
The average ages of 4 member, each having the age difference of 2yrs i...
Answer – D) 108 Explanation : X+X+2+X+4+X+6 = 54*4 = 216
4X+12 = 216
X = 216-12/4 =51
X+6 = 51+6 = 57
Required = 51+57 = 108
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