SOLUTION: There is an institution for men ages 40-60. There are over 600 men who are members of the institution and 5% of the men wear only one piece of jewelry. Of the other 95% of the memb

Question 1157191: There is an institution for men ages 40-60. There are over 600 men who are members of the institution and 5% of the men wear only one piece of jewelry. Of the other 95% of the members, half wear 2 pieces of jewelry and the other half wear none. How many pieces of jewelry have been worn in this club?
Found 2 solutions by josmiceli, greenestamps:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

30 wear 1 piece of jewelry
men remaining

285 men wear 2 pieces or
pieces

600 pieces of jewelry are worn

Answer by greenestamps(13203) (Show Source): You can put this solution on YOUR website!

Solve mentally (and quickly) with just a little bit of logical reasoning.

Among the 95% who don't wear one piece of jewelry, half wear two and half wear none. So among that 95%, the average number of pieces of jewelry worn is 1.

But the other 5% wear one piece of jewelry -- so on average all 600 men wear one piece of jewelry.

And that of course means the total number of pieces of jewelry is 600.

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