A) 10
B) 20
C) 30
D) 3
Correct Answer: C
Solution :
[c] Let the number of green flags be x. Then, |
\[3\left( \frac{10}{10+x} \right)=\frac{x}{10+x}\] |
\[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x=30\] |
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