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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?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?