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Application Math questions set up?
I need some help setting up some math word problems (application problems). I am not looking for the answer to the solution, I am sure I can figure it out. I am more stuck on how to make them into systems of equations. Any help or explanations are appreciated. Thank you!
1.A chemist has two solutions, one has 20% concentration and the other is a 45% concentration. How many liters of each must she mix to obtain 10 liters of 30% concentration?
2. Ace electronics, Hi-Fi Stereo, and CD WORLD buy a total of 175 VCR/DVD players from the same distributor each month. Because CD WORLD buys 25 more units than the other two stores combined, CDW's cost is only $160 per unit. THe players cost Hi-Fi $165 each and Ace $170 each. How many plays does each retailer buy each month if the distributor receives $28,500 each month from the sale of the players to the three stores?
1 Answer
- FredALv 59 years ago
I'm not sure what math subject you're aiming for.
3. A company's stock is divided among 5 investors as 15%, 25%, 30%, 20%, and 10%. Suddenly, the 25% investor decides to leave. How should the 25% remaining stock be divided among the remaining 4 investors with respect to their current percent ownership? What percentage of stock does each of the 4 investors own now?
4. You place $1000 in a savings account that has a 5% annual interest rate. How much money will you have in your savings after 19 months if you earn interest every month?
5. There are 45 boys and girls in a class. 60% of the class are girls and 20% of the class can speak Spanish. 17 boys cannot speak Spanish. How many girls in the class can speak Spanish?
Are those the type of questions you are seeking? I totally made them up without solving them, so I hope you don't have any negative answers, especially for #5.
