If you take 100 + 20% equal 120 but when you take total 120 minus 20% is not equal to 120. why?
200121
The main reason is that the two 20%'s are not the same.  The first is 20% of 100.  The second is 20% of 120.\n\nSo  100 + 20% of 100 =  100 + 20 = 120\nand 120 - 20% of 120 =  120 - 24 = 96\n\n\nYou are taking 20% of a different number.
37202
1/12=0.0833333333 per unit\n0.083333333 *100%=8.33333333%\nit is simple
574367
11/55\n= 1/5\n(1/5)*100 = 20%
43684
YOur premise for the first set is wrong.\n\nif c + p + s = 100 \nthen 10c + 3p + .5s  cannot = 100, but rather it would be \nXc + Yp + Zs would equal 100 where X is 10, Y is 3 and Z is .5\n\nBUT, according to your work problem, it couldn't be 10c plus anything since cows are $10 and 10 would eat up the whole $100.
437175
You mean 240,000 is the sum of 150,000 + 50,000 + 15,000 + 25,000. Yes?\n\nLet's call your four numbers a, b, c, and d.\n\nLet's call the total T.\n\nThe percent of T represented by a is (a/T) * 100\nThe percent of T represented by b is (b/T) * 100\nThe percent of T represented by c is (c/T) * 100\nThe percent of T represented by d is (d/T) * 100\n\nFor example, \n\n(15,000/240,000) * 100 = (15/240) * 100 = (1/16) * 100\n = 6.125%\n\nDoes that answer your question?
593121
15/100ths or simplified 3/20...all answers were wrong
517089
100%------>$1200\n80%-------->y\n(80x1200)/100=y\ny=960\nafter 2years\n80% of 960\n$768\n768 is 64% of 1200\nthe decrease was  36%
438370
40/100=0.4  -> 24/0.4= 60 %
506844
0.00056 = 0.056%, and by the way, \n0.056     = 5.6 % and\n5.6         = 560%
334801
There's a lot of strange answers that seem to be showing up on here.  I saw the correct answer though, and it's -1/597 which is about -.001675.  \n\nThe percent sign means that you change x% to x/100, and now\nyour equation is \n\nx/100 = 2x + 1/300\nmultiply left and right side by 100 to get x on the left by itself\n\n100 (x/100) = 100(2x+[1/300])\n => x = 200x + 100/300\n => x=200x + 1/3\nnow subtract 200x from both sides, getting the x term all by itself on the left side \n\nx-200x = 200x-200x +1/3\n => -199x=1/3\n\nthe final step is to divide each side by -199 so x has no coefficient and is completely solved for\n\nso -199x/-199 = (1/3)/(-199)\n\nand now x = -1/(3*-199)  = -1/597 which is approximately equal to -.001675
331396
If you are allowed to take a calculator into the test, that will help. The formula to calculate percentage increases is (in this case):\n\n£12,400 / £10,720 x 100 = 115.67164\n\nThe answer tells us that £12,400 represents 115.67% of £10,720 therefore the increase is 15.67%
504431
what it means is this 4 plus negative .01 and with the other it's 5 plus negative .04 its simple. if you know what it means and if you took notes look at them. it may help a little
565742
x*20/100*1/52=250\nx=(250*100)*52)/20\nx=1250*52=65000\nx=Principal
536025
ry +s = tx - m\nYou must leave y alone for indicate its value in terms of other variables.\n\nFirst of all you move the s to the other side or the = as shown: ry =tx- m - s (you change the sign of s)\n\nThen you move the r as follows: y=(tx-m-s)/r\n\nAnd thats it \n\nYou have a restriction because the r has to be different than 0 to avoid a division by zero.  So restriction is r different from zero.
273337
percentage change is your difference over the original number multiplied by 100
455079
First change the percent to a decimal. To do this, change the % sign to a decimal point and the move the decimal point two places to the left. Thus 12% =.12\n\nNow multipl this decimal by $250\n.12* $250 = $30
430670
Actually -- it is a simple subtraction.\n\n-1,299