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QUESTION
Q
A box has 100 blue balls, 50 red balls, 50 black balls. 25% of blue balls and 50% of red balls are taken away. % of...
Solution
Total number of balls = 100 + 50 + 50 = 200
25% of blue balls = 0.25 × 100 = 25
50% of red balls = 0.50 ×...
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