OpenStax, Algebra and Trigonometry 2e §11.2 Systems of Linear Equations: Three Variables · Exercise 56 · Algebra · Systems
Systems of Linear Equations: Three Variables · Exercise 56
At a family reunion, there were only blood relatives, consisting of children, parents, and grandparents, in attendance. There were 400 people total. There were twice as many parents as grandparents, and 50 more children than parents. How many children, parents, and grandparents were in attendance?
OpenStax, Algebra and Trigonometry 2e · §11.2 Systems of Linear Equations: Three Variables · Exercise 56
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