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Math question about sales tax

D

de9ali

Member
If I bought something for $110 and there was 10% sales tax. What is the formula to figure out the original price?
 
Ok, I'll help you but only because the short bus stopped to let me cross the street this morning:

(Original Price) * (1.10) = (Total Price)

(Original Price) = (Total Price) / (1.10)
 
You need to multiply the length of your schoolbus divided by the velocity of your car divided by the constant represented by the speed of light.
 
multiply by a million (thats 1000000 if you don't find the "a million" button on your calculator).
 
10% of something is 10/100ths of it or 1/10th of it. To find ten percent of something you take a tenth of it. You multiply by 1/10 or you divide by 10. Same thing. To divide by ten is simply to move the decimal point one place to the left 10% of $110.00 = $11.000 or $11.00.

If the item were 110.35 the problem becomes more complex. In this case you need to know how to round off because there is no such coin as a half cent. 5 to 9 rounds up and 1 to 4 round down. $11.04
 
Easiest way to do it is this: if it's 10% sales tax turn the % into a decimal. You do that by moving the decimal place two places to the left. So the decimal would start out at 0, you move it over two places and it ends up being .10. Now you multiply .10 by your total, and what you come up with you will add that to the total of your purchase. Bam, simplest explination possible.
 
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