Solve the following worded problems. Introduce and define variables. Set up your working equation/s as needed. Enclose your final answer. 1. A 50kg of mortar mix contains 25% cement and 75% sand. How much pure cement must be added to produce a mortar mix that is 40% cement?

B a A iC b a = 13 and c = 18. Find mZB %3D

William receives a truck load of a chemical. The shipping information says the truck holds 26,000 liters of fluid. The tank he is to pump it into has a capacity of 5000 gallons. Will it all fit?

You are designing the garden of your dream and you are going to start with a blank canvas. That means killing everything before putting down new plants. To do this, you are going to use herbicide to kill the overgrown weed. You have a lot of land that measures 25.6 yard by 20.4 yard. Each bottle of herbicide holds 12 fluid oz (fl oz). The instruction says to mix 1.9 fl oz with 1.0 gallon of water and that will treat an area of 155 ft?. How many bottles of herbicide will you need? Remember that you can't buy a fraction of a bottle but for this purpose, let's pretend that you can. Report the answer to the correct number of significant figures.