A farmer has 100 gallons of 70% pure disinfectant. He wishes to mix it with disinfectant with is 90% pure in order to obtain 75% pure disinfectant. How much of the 90% disinfectant must he use?

Q: A solution of ethyl alcohol that is 75% alcohol by weight is to be used as a bactericide. The…

A: Consider the provided information, Let x is grams of water and y is grams of 95% ethyl alcohol. So,…

Q: A patient needs 1mg of a medication. The Australian Injectables Drug Handbook states that each gram…

A:

Q: mixes 1/6 cup of blue paint for every 1/3 cup of red paint to make purple paint. How many cups of…

A: Given query is to find the amount of red paint to be mixed.

Q: A chef is going to use a mixture of two brands of Italian dressing. The first brand contains 8%…

A: Suppose that, x mL of 8% vinegar is used in the mixture and 380 - x mL if 30% vinegar is used in the…

Q: Jonathan has 3/4 pound of grapes. How many 1/8 pound servings can Jonathan make from his grapes?

A: I have explained everything within the solution. Please go through.

Q: How much water must be evaporated from 7 qt of a 50% antifreeze solution to produce a 70% solution?

A: Quantity of antifreeze solutionSolution percentage

Q: The local high school had 1,000 bottles of water on hand. The school issued 1/4 of  the supply to…

A: To find out how many bottles remained for the 12th grade, you need to subtract the portions given to…

Q: At first 1/3 of the children in the room were girls. When 3 boys left, 1/2 of the remaining children…

A: At first 1/3 of the children in the room were girls. When 3 boys left, 1/2 of the remaining children…