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.
To cut off a blonde's ears, put razor blades on each shoulder and ask the blond a question. Automatically the blonde will shake her head from shoulder to shoulder saying "I don't know."
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