math
posted by Math Geek .
Dear Ms.Sue is the answer to 5lb.13oz. 67oz. By the way your helping my future,I want to be a math and science teacher.

Yes, 67 oz. is right.
However, a simpler answer is
4 lb., 16 oz.  13 oz = 4 lb, 3 oz.
Great! I know you'll be a good math and science teacher.