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Marcos and Oliver have 324 markers altogether. The number of markers Marcos has is equal to 80% of Oliver's markers. How many more markers does Oliver have than Marcos?

 May 18, 2021
 #1
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Let Oliver's markers  =  N

Then  Marcos's  markers =  .80N

 

So

 

N  + .80N =  324        simplify

 

1.80N  = 324                divide both sides by  1.80

 

N  =    324 / 1.80   =   180 =  Oliver's  markers

 

.80 ( 180)  =   144  =  Marcos's  markers

 

Oliver  has   180  -  144   =  36  more

 

 

cool cool cool

 May 18, 2021

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