Hey, I'm having some problems with some Fraction Word Problems in Algebra, can anyone assist me as to how I'm supposed to create my equations from the following two word problems in order to solve? Thanks: 1) A 150mL solution of alcohol in water is 75% alcohol. How many mL of a 67% solution should be added to make the solution 72% alcohol? Let x - the number of mL of 67% solution to be added. 2) One pipe can fill a tank in 7 minutes less time than it takes a smaller pipe. Together they can fill the tank in 12 minutes. How long would it take the larger pipe to fill the tank? Let t = the number of minutes it takes the larger pipe to fill the tank alone. For 2 I'm guessing it's t + (t - 7) = 12 ? Thanks.