0A9B8C6D7 Correct answer: B ExplanationRates: M+N+K = 47/240 (since 5 5/47 days = 240/47), N+K = 1/6 = 40/240 and K+M = 1/10 = 24/240. So M = 7/240 and N = 23/240, giving M+N = 30/240 = 1/8. Hence X = 8 days. Join the discussion Report an error Share
