How do I show my work if I’m trying to find a prime number

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?

Find the value of x for which the lines are parallel.

Can any one me with the answers to these questions asap?