I know this is chemistry but no one has helped me yet and this is technically math so if somone knows how to do this pls help

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?

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.