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Solve the Problem Using Two Linear Equations in Two Variables

Question 62

Multiple Choice

Solve the problem using two linear equations in two variables and Cramer's rule.
-Twice the water flow in the hot-water pipe is the same as three times the flow in the cold-water pipe. The combined flow is 1400 liters/hr. What is the flow in each pipe?


A) 700 liters/hr hot, 467 liters/hr cold
B) 560 liters/hr hot, 840 liters/hr cold
C) 467 liters/hr hot, 700 liters/hr cold
D) 840 liters/hr hot, 560 liters/hr cold

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