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The Fan

Math brain teasers require computations to solve.

 

Puzzle ID:#10545
Fun:*** (2.1)
Difficulty:** (1.58)
Category:Math
Submitted By:ka-boom***

 

 

 



Joe Bob just installed a fan system to cool off from the summer heat. The fan spins at a maximum speed of 40 mph and is controlled by a 360 degree turning knob. Assuming the fan is spinning at 15 mph, how much would the knob have to be turned in order to go at a constant speed of 25 mph?

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