A chemist mixes a 20% saline solution and a 40% saline solution to get 60 milliliters of a 25% saline solution. How man milliliters of each saline solution should the chemist use in the mixture?

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

Answers; a) 135 degree’s b) 30 degree’s c) 180 or 0 degree’s d) 90 degree’s

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.