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SureMath - the math software for 21st century problem solving - was used to solve this problem.
Problem Solution
Problem Solution
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Word problems encountered in early grades can be usually be solved by the givens-based approach.

As grade level advances this is no longer reliable. Problems of any substance require a concept-based (knowledge-based) approach.

The change from givens-based problems solving to concept-based problem solving requires practice. It is much like changing from hunt and peck typing to touch typing. Both changes require considerable effort but the rewards are substantial.

Please comment. Comments are appreciated and contribute very much to developing these pages.

The problem solution was developed by Howard C. McAllister using SureMath.

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