A textbook story sold a combined total of 333 mathand psychology textbooks in a week. The number ofmath textbooks sold was two times the number ofpsychology textbooks sold. How many textbooks ofeach type were sold?

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Answered: A textbook story sold a combined total…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A textbook story sold a combined total of 333 math and psychology textbooks in a week. The number of math textbooks sold was two times the number of psychology textbooks sold. How many textbooks of each type were sold?