Back to 11.7 Solving Systems with Inverses

11.7 Exercise 74

Avg difficulty 2.5

Write a system of equations that represents the situation. Then, solve the system using the inverse of a matrix.

Students were asked to bring their favorite fruit to class. 95% of the fruits consisted of banana, apple, and oranges. If oranges were twice as popular as bananas, and apples were 5% less popular than bananas, what are the percentages of each individual fruit?

OpenStax Algebra and Trigonometry 2e, 11.7 Solving Systems with Inverses, exercise 74

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.