? The green marbles make up exactly \[\frac{1}{2}\] of the set. |
? The set has 2 black marbles. |
? The number of white marbles is twice the number of black marbles. |
A) 6
B) 4
C) 8
D) 12
Correct Answer: D
Solution :
Number of black marbles = \[\] Number of white marbles \[=\text{ }2\times 2=4\] Total number of black and white marbles \[\text{=4+2=6}\] Total marbles \[\text{(n)=n=}\frac{\text{1}}{\text{2}}\text{ }\!\!\times\!\!\text{ n+6}\] \[\text{n=2}\times \text{2=12}\] Number of green marbles \[=12\times \frac{1}{2}=6\]You need to login to perform this action.
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