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Solve the Problem Using Two Linear Equations in Two Variables

Question 76

Multiple Choice

Solve the problem using two linear equations in two variables and Cramer's rule.
-A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 5% cement should he mix with 5 bags of 13% cement to produce a mix containing 9% cement?


A) 15 bags
B) 5 bags
C) 7 bags
D) 10 bags

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