MATH 33B
09 - Yes, we do mix things in real life.pdf

# 09 - Yes, we do mix things in real life.pdf - Name Mixture...

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Name: __________________________ Mixture problems using two variables Yes, we do mix things in real life! The ability to picture the mixture story will give you the best opportunity to understand what is happening and achieve the correct results. Using a chart can additionally help organize the information from the problem. 1. The left bank is offering CD’s at 5%. The right bank is offering a money market account at 4%. If I have a total of \$10,000 to invest in these accounts and want a return (accrued interest) on my money of \$436 from both accounts at the end of one year , how much should I put into each account? Let C represent \$\$ you put into CD. Let M represent the \$\$ you put into the money market. Complete the chart below using information from the problem: Mixture problem Principal (\$ invested) Rate (% as decimal) Time (yrs.) Interest (\$ earned on investment) CD account C 0.05C Money market 0.04 0.04M Totals for the two bank accounts \$10,000 Cannot be found by adding values above 1 The first column in the chart should contain information necessary to write one equation containing the two variables and the last column should show information to write another equation containing the two variables. Fill in the boxes below with the information from those columns to set up the system of equations: + = + = \$\$ put into CD account \$\$ put into money market Total \$\$ invested CD interest (at 5%) Money market interest (at 4%) Total interest Principal Rate Time =

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Solve algebraically.
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• Fall '13
• Money market, complete sentences

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