SureMath - the math software for 21st century problem solving - was used to solve this problem.

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Introductory problems are simple enough that you can easily put together an answer. This results in never developing the skills to handle more involved problems. By practicing organizing the solution as shown in this example you will develop the skills needed to handle more advance problems and real world problems. The steps in the solution shown above is present in the solution to all problems. The words change, the symbols change and the ideas change but the problem solving process remains the same. Learn it now and become a happy problem solver from grade school through grad school and beyond.