Mac has 25 marbles, of which 20% are red. Thayer has 20 marbles, of which 75% are not red. What is the absolute difference between the numbers of red marbles they have?
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Step-by-step explanation:
Mac has 25 marbles
20% are red
20/100 x 25 = 5
therefore Mac has 5 red marbles.
Thayer has 20 marbles
75% are not red
hence 25 % are red
25/100 x 20 = 5
5-5=0
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