The easy steps behind Combined Work Rate Problems: These problems have two people (or machines) working at different rates and you need to find the combined time to finish the job.
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Prep for Tests
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If you need to check your conversion, you can use this site. You enter your conversion and it will do it for you. Great way to check your answers.
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General Units
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Great site to use to get a scientific calculator to solve or check your problems you are working on. Larger and easy to use.
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Scientific Calculator
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First page of a series of lessons on proprotions and ratios, with a few solved examples.
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Math.com
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The student explores a virtual mall. Each "place" at the mall uses a different combination of money and percentage finding skills.
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Math Playground
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This page links to one-line explanations how to calculate percents
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aaamath.com
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Good examples of how to solve rate of work problems.
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Algebra Homework Help -- People's Math!
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Has several ratio and proportion problems, including word problems. Each problem is worked out, step-by-step, on the screen and with sound.
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Algebasics
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Explains, with examples, how to solve word problems using the distance formula of D=rt
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Online Math Learning.com
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Explains the use of the math formula Distance = Rate x Time, giving example probblems.
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Math.com
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