Ben, tim, and sam have to do a certain job. ben can finish the job in 5 hours. tim can finish the job in 6 hours. sam can finish the job in x hours. the three of them can finish the job in 2 hours if they work together. find x.

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?

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?