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The a weight of an object on the moon is 1/6 of its weight on earth. if a moon rock weighs 20 1/2 lb on earth, how much did it weigh on moon?

 Feb 1, 2020
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The a weight of an object on the moon is 1/6 of its weight on earth. if a moon rock weighs 20 1/2 lb on earth, how much did it weigh on moon?  

 

Probably the easiest way to calculate 1/6 of 20-1/2 is to change the 20-1/2 to a fraction. 

 

                                                   20-1/2  =  41/2    

 

Divide that by 6 which is the

same as multiplying it by 1/6       41/2 • 1/6  =  41/12            

 

Simplify the fraction                     41/12  =  3-5/12    (in words, three and five twelfths)

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 Feb 1, 2020

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