5) Twice the difference of y and three ​

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?