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Wipro NLTH Written Test Qs.(Quantitative Aptitude) :: Ratio & Proportion - Discussion

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The ratio of white balls to black balls is 1:2. If 9 grey balls are added then the ratio of white:black:grey is 2:4:3. Find the number of black balls.

A10

B11

C12

D13

Answer: Option (Login/Signup)

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Asked In :: Wipro NLTH SSC CGL Tier I

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