Algebra Word Problems
I have 2 word problems in which I need to set up the equation and arrive at an answer. I am not exactly asking for an answer to these problems, I just need help in setting the labels and equations up. For question one I have most of the information, but not for question two. The areas typed in red are the areas that I need help with. THANK YOU SOOOO MUCH!!!
1) A chemist needs 140 mL of a 32% solution but has only 22% and 50% solutions available. Find how many mL of each that should be mixed to get the desired solution.
*(Verbal Model): #of mL of 22% solution + # of mL of 50% solution=140mL of 32% solution
*(Labels): #of mL of 22% solution=x, #of mL of 50% solution=140-x, amount of 22% solution=0.22x, amount of 50% solution= .50(???), amount of 32% solution= .32(???)
*(Equation): .22x + .50(???) = .32(???)
2) Two pumps can fill a water tank in 45 minutes when working together. Alone the second pump takes 3 times longer than the first to fill up the tank. How long does it take the first pump alone to fill the tank?
You only have to do one step and use all the terms you've found by yourself:
Originally Posted by kanej316
Expand the bracket and solve for x. (For confirmation only: x = 90)