Quandaries and Queries 

Name: Chet Warfel
Who is asking: Other
Question: Here's my question: If I want to figure what a reseller will sell a product for if he wants 40% margin(by the technique above), what formula do I use? Let's say I want to sell a product for 8.50, and I want the reseller to make 40% My best technique is "guess and check" by plugging in the numbers and seeing if I'm too high or too low, then trying again. If I just multiply by 1.4 ....well that doesn't work! Help!
Thanks in advance. Hi Chet, I like this question, it shows the power of some algebra. First there is a typo in the question, to get the 0.66 above you should have said 10/15. I need to introduce some letters to explain what to do. Suppose that the customer bought the item for $b and he sold it for $s. Your salesman calculates the profit margin (I will call it m) by Your question is then, if you know m and b, what is s? This is where you need some algebra. If Penny 

