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There are 100 balls in a bag. 0.25 of them are red balls, and the rest are green and blue balls. If there are 1/4 as many green balls as blue balls. How many blue balls are there?

 Apr 21, 2022
 #1
avatar+30 
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Do you mean 25% of the balls are red?

 Apr 21, 2022
 #2
avatar+124594 
+1

25 are red

 

So

 

green  + blue = 75

 

And there  are 4 times as many  green balls as blue

 

So

 

4B +  B =   75

 

5B  = 75

 

B =  75 /5  =  15  = blue ones

 

And the number of green ones  =  60 

 

cool cool cool

 Apr 21, 2022
 #3
avatar+231 
+1

There are 100 balls in a bag.

Number of Red Balls = 0.25 * 100

                                  = 25/100 * 100 = 25

   Remaining Balls = 100 - 25 = 75

   Let there be x blue balls.

              Green Balls = 1/4x

                x + 1/4x = 75

               (4x + x)/4 = 75

                          5x = 75 * 4

                            x = (7515 * 4)/5

                               x = 60

There are 60 blue balls.

 Apr 21, 2022

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