SOLUTION: Select the set of equations that represents the following situation: Mike invested $780 for one year. He invested part of it at 4% and the rest at 5%. At the end of the year he ear
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Question 461162: Select the set of equations that represents the following situation: Mike invested $780 for one year. He invested part of it at 4% and the rest at 5%. At the end of the year he earned $34.44 in interest. How much did Mike invest at each rate of interest?
A) x + y = 780; 4x + 5y = 34.44
B) 0.04x + 0.05y = 780; x + y = 34.44
C) x + y = 780; 0.04x + 0.05y = 34.44
D) 0.04 · 780 + 0.05 · 780 = 34.4 Answer by mananth(16946) (Show Source):
