4.1) Using the substitution method, solve the following simultaneous equation:

MACROECONOMICS FOR TODAY
10th Edition
ISBN:9781337613057
Author:Tucker
Publisher:Tucker
Chapter1: Introducing The Economic Way Of Thinking
Section1.A: Applying Graphics To Economics
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4.1) Using the substitution method, solve the following simultaneous equation: 4y = 2x - 30 ……(1) 2x - 6y = 20 ……(2) (5 Marks) 4.2) The pie chart above illustrates the number of students enrolled in each faculty at Harvard University. Using the information provided, answer the following questions. 4.2.1) What is the total number of students from the four faculties? (2 Marks) 4.2.2) What percentage of students are enrolled in the Accounting and Economics faculty? (4 Makrs) 4.2.3) What
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