If it takes Alicia 3 hours to paint a fence, and it takes Mark 6 hours to complete the same job. How long would it take both of them working together at their normal paces to complete the same job?
Two hours. Alicia can complete 1/3 of the job in one hour and Mark can complete 1/6 of the job in one hour; therefore, together they can complete 1/3 plus 1/6 or 1/2 of the job in one hour. Consequently, the entire job can be completed in just two hours. Or, you can figure it by saying (a x b)/(a b)=time spent.
A group of chess enthusiasts checked into a hotel and were standing in the lobby discussing their recent tournament victories. After about an hour, the hotel manager came out of his office and asked them to disperse. "But why?, they asked, as they moved off. "Because," he said, "I can't stand chess nuts boasting in an open foyer."
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