Write a system of two equations in two variables to solve each problem. Investing
Chapter 4, Problem 37(choose chapter or problem)
Write a system of two equations in two variables to solve each problem. Investing. Carlos invested part of $3,000 in a 10% certificate account and the rest in a 6% passbook account. The total annual interest from both accounts is $270. How much did he invest at 6%?
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