SOLUTION: If a, b, and c are positive numbers such that 3a = 4b = 5c, and if a + b = kc, what is the value of k ?
(A) 12/35 (B) 5/7 (C) 10/7 (D) 7/5 (E) 35/12
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Question 253013: If a, b, and c are positive numbers such that 3a = 4b = 5c, and if a + b = kc, what is the value of k ?
(A) 12/35 (B) 5/7 (C) 10/7 (D) 7/5 (E) 35/12
Answer by JimboP1977(311) (Show Source): You can put this solution on YOUR website!
Express left handside in terms of a.
The a terms cancel to give
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