What is 0.36, the 36 repeating as a fraction in simplest form

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?

Select the lengths in centimeters that would form a right triangle

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?