SOLUTION: A coin collector bought a new coin worth 3 times the average value of the other 17 coins in his collection. What part of the value of the total collection does the new coin represe

Question 395789: A coin collector bought a new coin worth 3 times the average value of the other 17 coins in his collection. What part of the value of the total collection does the new coin represent?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
A coin collector bought a new coin worth 3 times the average value of the other 17 coins in his collection. What part of the value of the total collection does the new coin represent?
let x=average value of the 17 coins in the current collection
3x=value of new coin
part value of new coin =3x/(17x+3x)
=3x/x(17+3) =3/20 or 15%
ans: the new coin represents 15% of the total collection
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