22. The correct answer is (D). From statement (1) alone, you know that washers are
bought at 45 cents per dozen and sold at 54 (3 3 18) cents per dozen. Calculating the
profit on seven dozen washers is simply a matter of multiplying the difference (9 cents)
by 7. Hence, statement (1) alone suffices to answer the question. (The answer is 63
cents.) From statement (2) alone, you know that a single washer costs $0.0375 ($3.75 4
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