The sum of three numbers is 20. The first is four times the sum of the other two. The second is seven times the third. What is the product of all three?
(A) 28 (B) 40 (C) 100 (D) 400 (E) 800
ANSWER: C
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The sum of three numbers is 20. The first is four times the sum of the other two. The second is seven times the third. What is the product of all three?
(A) 28 (B) 40 (C) 100 (D) 400 (E) 800
ANSWER: C