Question 1020627
See the lesson in profile for the first question.
<a href="http://www.algebra.com/my/FIND-RECTANGLE-DIMENSIONS-USING-GIVEN-PERIMETER-AND-AREA.lesson?content_action=show_dev">FIND RECTANGLE DIMENSIONS USING GIVEN PERIMETER AND AREA </a>


The coins question:
d for dimes, q for quarters;
{{{system(d+q=14,0.1d+0.25q=2.27)}}}
but you should see an immediate inconsistency with the problem description.  Recheck the given values very carefully or any missing information in the description.