In a bag the ratio of red balls to green balls is 4 : 9. If 6 more gre – McqOptions

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1.	In a bag the ratio of red balls to green balls is 4 : 9. If 6 more green balls were added to the bag, the ratio of red balls to green balls would become 1 : 3. How many red balls are there in the bag?
A.	9
B.	10
C.	8
D.	12
Answer» D. 12

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