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By what percent will a fraction decrease if its numerator is decreased by 85% and its denominator is decreased by 25%?

 

 Feb 2, 2021
 #1
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Let  the original  fraction be  x  /  y

 

After  the  decreases we have

 

.15x  / .75 y   =   ( 1/5) (x/y)    =   .20 (x / y) 

 

So  .....         .20(x/y)   =  (1 -.80) (x/y)   =    80%  decrease

 

 

cool cool cool

 Feb 2, 2021

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