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Book Club Volunteers

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Book Club Volunteers

by tonebeeze » Wed Apr 27, 2011 3:33 pm
What is the best way to go about solving this problem?

Every member of a book club volunteers to contribute equally to the purchase of a new bookcase that costs $180. How many members does the club have?

1. Each member's contribution is to be $6.
2. If 10 club members decide not to contribute, then the remaining members must increase their contribution by $3.

OA = D
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Source: — Data Sufficiency |
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by vineeshp » Wed Apr 27, 2011 5:11 pm
1 ) Sufficient.
180 dollars for the book and cost per person is 6. Hence 180/6 can be solved.

2)If 10 club members decide not to contribute, then the remaining members must increase their contribution by $3.
No of ppl = p
contribution = c.

p * c =180
Now as per the condition
if 10 dont contribute, contribution goes up by 3
(p-10) * (c+3) =180
p*c -10c + 3p -30 = 180
Solve and you can get p.
Sufficient.
Vineesh,
Just telling you what I know and think. I am not the expert. :)
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