Red balls
The bag has three red, 12 blue, and eight green balls. If we want the probability of pulling out the red balls to be 20%, how many red balls must we add to the bag?
Correct answer:
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Would you like to compute the count of combinations?
You need to know the following knowledge to solve this word math problem:
combinatoricsalgebrabasic operations and conceptsGrade of the word problem
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