Thanks for the question Malibu ! I hope this helps you to better understand Alligations. Where would you like to go now? Tic-Tac-Toe Math Video Math Home Page Site Map
2) Now, do two diagonal subtractions to get the difference between what you have and what you want and write the answers in the right hand top and bottom. You will have one negative number, but always write it as positive.
3) what you have done is determine how many parts of each formula to use to arrive at the desired formula..
4) To make things easier, go ahead and reduce your parts down to lower terms. (since you can)..
5) Now you know that you need 9 total parts.
6) Now use proportions math to calculate how much 1 part would equal. 7) Then, to figure out the rest of the solution, simply make up the difference with the other parts (the 5%). 4500 Total Ml - 500mL (of the 50%) --------- = 4000mL (of the 5% ) Cross check
+500 Milliliters | of the 50% Dextrose | = | 4500 Milliliters | of 10% Dextrose | |