Difference between revisions of "2002 AMC 10B Problems/Problem 21"

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21. Andy's lawn has twice as much area as Beth's lawn and three times as much area as Carlos' lawn. Carlos' lawn mower cuts half as fast as Beth's mower and one third as fast as Andy's mower. If they all start to mow their lawns at the same time, who will finish first?
 
21. Andy's lawn has twice as much area as Beth's lawn and three times as much area as Carlos' lawn. Carlos' lawn mower cuts half as fast as Beth's mower and one third as fast as Andy's mower. If they all start to mow their lawns at the same time, who will finish first?
  
(A) Andy  (B) Beth  (C) Carlos  (D) Andy and Carlos tie for first.  (E) All three tie.
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'''(A) Andy  (B) Beth  (C) Carlos  (D) Andy and Carlos tie for first.  (E) All three tie.'''

Revision as of 13:22, 1 January 2011

21. Andy's lawn has twice as much area as Beth's lawn and three times as much area as Carlos' lawn. Carlos' lawn mower cuts half as fast as Beth's mower and one third as fast as Andy's mower. If they all start to mow their lawns at the same time, who will finish first?

(A) Andy (B) Beth (C) Carlos (D) Andy and Carlos tie for first. (E) All three tie.

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