Mr Yoshi has 75 papers. he graded 60 Papers, and he had a student teacher grade the rest. which type of percent problem is this?

Use the multiplier method to incrases £258 by 43%

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?

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i