Tutoring math, consumer situations come up. The tutor mentions a common type. Let’s imagine an item is on sale for 1.25. A sign underneath it reports savings of 37 percent. What would be the regular price of that item? Let …
Self-tutoring about ways to estimate a grocery bill: the tutor mentions some thoughts. When I get around to it, I don’t mind grocery shopping. One idea I hold to, though, is that one should have a pretty good idea of …
Tutoring math, everyday problems need easy methods when possible. The tutor mentions one. Let’s imagine a consumer buys an item with sticker price $44, subject to 15% discount, then 12% tax. What is the final amount they will pay? One …
The tutor shows a conversion from early Math 10 Pre-Calc. Herein, I use the abbreviations oz for ounce and lb for pound. Example: Convert 1013 ounces to pounds and ounces. Solution: Realize that 16 oz=1 lb. Divide 1013 by 16 …
The tutor answers a question that brought someone to his site. These days, Oracle Tutoring gets between 5000 and 6000 distinct visitors per month. Looking over the raw log entries of how some visitors arrived, I saw an inquiry yesterday …
The tutor continues from his last post about the value of solar energy dollars. In my last post I discussed the Wattage one might expect from solar energy for $100. Based on a graph from Scientific American, the equation for …
The tutor continues exploring annuities. In my previous post I introduced the idea of an annuity with an example. That example had each payment at month’s-end; hence, it was an ordinary annuity. With an annuity due, the payment is …
Financial math: ordinary annuity versus annuity due Read more »
Financial math awaits many students. The tutor introduces annuities. From the point of view of a typical consumer, an annuity is the reverse of a loan. The consumer becomes the lender, while the institution pays them back, often with monthly …
A lifetime ago, the tutor studied financial planning. That’s when he got acquainted with the HP-10B. Of the financial calculators I know, the Hewlett-Packard HP-10B is potentially the easiest to use. One feature of particular value to anyone in financial …
Financial math: interest rate conversions on the HP-10B Read more »
When the tutor was in high school, a course called Consumer Education was mandatory. The beautiful, energetic high school students of today will, sooner or later, be workers. They will gain one kind of freedom at the expense of another. …