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40% of items in a group are red. Of those red items, 30% have stripes. What percentage of all items are red AND striped?
A10%
B12%
C70%
D75%
Answer & Solution
Correct answer: B. 12%
Red items = 40% of total = 0.4. Of these, 30% are striped: 0.3 × 0.4 = 0.12 = 12%. So 12% of all items are red and striped.
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