"And" followed by a "Comma"

1) These programs can increase high school graduation rates, and graduates earn more, pay more taxes, and rely less on state-provided health care. 2) They pay from $5 to $100 a week for city-sponsored child care. Few will be able to pay the full cost on their own, and, without a safe and educational...

Mixture with Alligation

A vessel contains 5 parts of milk and 1 part water. how much of the mixture is to be removed and replaced by water to make the resulting mixture 1/2 water and 1/2 milk ? The answer is 2 2/5. I used the alligation method wherein I took the ratio of water and solved for it. I got 2/5 ( the amount of w...

Thanks Stuart. I was able to solve it using "4 gallons of a 25% solution" suggested by you.

1 more Mixture problem

Bryan discovers at the end of the summer that his radiator antifreeze solution has dropped below the safe level. If the radiator contains 4 gallons of a 255 solution, how many gallons of pure antifreeze must he add to bring it up to a desired 50% solution? What does "If the radiator contains 4 ...

@bblast

How did you get the ratio as 2/3 for the thyme problem.

Could you please explain

Thanks

Mixture problem

A car’s radiator has 24 quarts of a 40% antifreeze solution. How many quarts should be drained and replaced with pure antifreeze if the final mixture is to be 50% antifreeze.

SC-- Tenses

I was reading "The Economist" earlier and came across the following sentence. "Earlier today, it had been announced by the South that they had agreed in principle to begin discussions on reunions for separated families." When I read the sentence I could figure that the sentence w...