50 Jars sit on a shelf, of which 12 are red and not round; and 30 are round and not red. How many jars sit on the shelf that is both red and round?
1. There are only 5 jars on the shelf which are not red and not round.
2. Of the round jars, The number of nonred is 10 times the number of red jars.
Answer: D
Source: Economist
50 Jars sit on a shelf, of which 12 are red and not round; and 30 are round and not red. How many jars sit on the shelf
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