A First Course in Linear Algebra · Problem M45

Systems of Linear Equations — Robert Beezer

Mathematics — Linear Algebra · systems-of-equations-word-problem

Problem

You keep a number of lizards, mice and peacocks as pets. There are a total of 108 legs and 30 tails in your menagerie. You have twice as many mice as lizards. How many of each creature do you have?

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