A can complete a work in 12 hours, B in 15 hours, and C in 20 hours. If A works for 1 hour, B for 2 hours, and C for 3 hours, what fraction of the work is completed?
A can complete a work in 12 hours, B in 15 hours,…
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A can complete a work in 12 hours, B in 15 hours, and C in 20 hours. If A works for 1 hour, B for 2 hours, and C for 3 hours, what fraction of the work is completed?
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