What is 375divided by 255

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

If a || b and e || f , what if the value of y ?