Question

Randi had surgery on her knee. Right after the surgery

she could bend her knee only 30° from a horizontal
position. After six weeks of physical therapy, she can
bend it 108°. How many more degrees can she move
her knee after therapy? Explain.
Doesn’t the answer have to be in a degree

Answer 1

Well, we know that she could only bend her knee 30 degrees from the start.

And after six weeks of therapy, she can bend it 108 degrees.

So that means: 108 - 30 = 78 degrees more.