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I have a bag of marbles, where each marble is pink or yellow. The ratio of pink marbles to yellow marbles is 3:5 If there are total of 72 marbles in the bag, how many are pink?
 

 Oct 14, 2017
 #1
avatar+558 
+2

This might be a horrible explanation, but I'll try. laugh

First, we know that the ratio is 3:5. 

You can also think of this ratio as 3x:5x.

3x+5x=8x. Make this equation: 8x = 72(total). 

x=9. 

3x would be the part that represents the pink marbles, so plug in 9 for x.

3(9)=27.

There are 27 pink marbles.

 Oct 14, 2017
 #2
avatar+95866 
0

Your explanation is just fine, Gh0sty.....!!!!

 

 

cool cool cool

 Oct 14, 2017

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