Solve for x and y. round to the nearest tenth if necessary. a. x=30, y=6.4 b. x=15, y=7.2 c. x=15, y=6.4 d. x=30, y=8.1

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?