---------------------------------------------------------------------------------------------------------------------------------------- HumorHour.com competition - Win lots of prizes! |
Riddles ------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------ Fence painting If it takes Alicia 3 hours to paint a fence, and it takes Mark 6 hours to complete the same job. How long would it take both of them working together at their normal paces to complete the same job? Solution: Two hours. Alicia can complete 1/3 of the job in one hour and Mark can complete 1/6 of the job in one hour; therefore, together they can complete 1/3 plus 1/6 or 1/2 of the job in one hour. Consequently, the entire job can be completed in just two hours. Or, you can figure it by saying (a x b)/(a+b)=time spent. |
|
---------------------------------------------------------------------------------------------------------------------------------------- |
Copyright © 2004-2011 HumorHour.com. All rights reserved. | - Return to Top - |