Answered: Craig owns a ready mis concrete…

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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Craig owns a ready mis concrete company. Craig receives an order for 1.5 cubic yards of concrete. This mixture of concrete contains sand, cement, gravel, and water; for each pound of water, there are 5lb of sand, 2lb of cement, and 7lb of gravel. Find the total weight of the order (in pounds), assuming a cubic yeard of concrete weighs 4000 lb, and how many pounds of each ingredient must be used.

answer in the back of the book is:

water: 400lb

sand: 2000lb

cement: 800lb

gravel: 2800lb

please help me set up the equations needed to solve the problem and get the answers given.

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