Please help with this its my last problem and im lost

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?

See attachment below and find the equivalent of tan(∠qsr)

Find the rate at which the water is now flowing from the tap give your answer cubic centimetres per second