Ithink the answer is 62 but im not completely sure.

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?

Solve -.016x= -16. need solving this

Which shows how to solve the equation 3/4x=6 for x in one step?