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Katie and Beth had the same number of marbles on January 1st. By the end of the year, Katie's collection of marbles increased by 25% and Beth's decreased by 75%. On December 31st, the number of marbles Beth owned was what percent of the number of marbles Katie owned?

 Jun 30, 2020
 #1
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Sometimes you can just pick an easy number to dealwith....like they both start with 100 marbles

 

at the end of the year  Katie has 125   and Beth only has 25      25/125 x 100% = 25 %

 

 

 

 

x = number with which they each start....     1.25 x   is what Katie has and .25x is what Beth has at Y/E

 

.25x/1.25x * 100% = 25%

 Jun 30, 2020
edited by ElectricPavlov  Jun 30, 2020

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