What amount of pure acid must be added to 300ml of a 25% acid solution to produce a 70% acid solution?

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

What is coefficient of the term of degree of degree 5 in the polynomial below

You are shooting hoops after school and make 152 out of a total of 200. what percent of shots did you make? what percent did you miss? show proportion(s).