Thank you so much. I've been staring at my interest problems for like 4 hours now unsure where to start. I even have my math 126 test tomorrow. Haha. Pray for me humans
I like your teaching style and great videos. If I could, I would give your videos more than one like. At 4:00 you include the investment of 20,000 in the principal section, at 20:49 you don't include the 75,000. Can you explain why there are 2 different methods for basically the same question? Thanks
+Sabrina F Hello Sabrina! The values for principal vary based on the information given for each problem. Check out how they described each investment in the two problems to see why the principal section was defined differently.
all these problems deals with interests at one year only. Any worked problems on multiple years? Also, I was looking for a compound interest problems as well...any videos yet?
We'll be happy 2 help you in an online tutorial. Check out our services at www.TutorMeMath.net. You may also check our recommended channels list 4 an example that can help you.
Just had to comment; problem #4 could be solved directly using the amount column. X + 4X = $75,000, therefore 5X = 75000, X = 15000. Like your videos and have watched dozens of them. I have the most problems with huge complicated complex fractions, those that cover half a page. Usually find my error is something simple, like subtracting 12 from 27 and calling it other than 15, WTH. Am I the only one watching in 2020.
Thanks 4 sharing Neil and I definitely hope you’re not the only one watching in 2020! 😁 I disagree with your conclusion and believe this was a happy coincidence. The part that has to coexist is that the amounts must yield the correct annual interest. Depending on the interest rates that could change drastically. For instance, if you change the 1st interest rate to 6% and the 2nd to 10% you’ll find the value of x change.
I didn't mean to imply this would work an all problems. I just happened to notice this one and thought hmmmmm. I'm a retired mfg engineer (72 yrs old), spending the last 35 years programming cnc machines and using cad/cam systems. I used basic algebra and trig on a daily basis, but am finding I've forgotten things like factoring, complex fractions and that sort of thing that I've not used for 50 + years. My retirement hobby, among others, is to master (?) calculus. Why? I don,t know.
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