Help please can’t get this wrong. Am I doing this right if not correct me. And how do I write it

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?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5