i was working to solve this for submission and now the professor asked to submit it in mathcad 15 format.
it is a small file, can someone do the favor please. i am stuck.
Unfortunately thanks to PTCs "wisdom" there is no way to convert a Prime file to any older formats - not in older Prime versions formats and not to Mathcad 15. So you will be forced to retype it in Mathcad 15.
BTW - it seems your solutions are missing any units!
EDIT: In case you are not aware of - if you are entitled to use Prime you are also allowed to use Mathcad 15 for free. You may download it at one of the links below, install it and it will happily use the very same license file which was created when you installed Prime.