A tank is filled in eight hours by three pipes K, L and M. Pipe K is twice as fast as pipe L, and L is twice as fast as M. How much time will pipe L alone take to fill the tank ? A. 32 hrs B. 24 hrs C. 28 hrs D. 26 hrs Answer Workspace Report Discuss Answer with explanation Answer: Option C Explanation 1/K + 1/L + 1/M = 1/8 (Given) Also given that K = 2L and L = 2M => 1/2L + 1/L + 2/L = 1/8 => (1 + 2 + 4)/2L = 1/8 => 2L/7 = 8 => L = 28 hours. Workspace
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