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There are 27 red or blue marvels in a bag. The number of red marbles is 5 less than 3 time the number of blue marbles. How many red marbles are in the bag? How many blue marbles are in the bag?

 Mar 5, 2020
 #1
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Number  red  = R

 

Number  blue  = 3R - 5

 

So

 

R  + 3R - 5  = 27     

 

4R  -  5  = 27    add  5 to both sides

 

4R  = 32   divide both sides  by   4

 

R  = 8     

 

Number blue  =  3(8)  - 5  =   19 

 

 

cool cool cool

 Mar 5, 2020

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