.cuál es el resultado de 3.15+2

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?