--- loncom/homework/templates/SimpleFormula.problem	2002/06/06 08:56:43	1.1
+++ loncom/homework/templates/SimpleFormula.problem	2004/06/10 22:17:59	1.3
@@ -1,13 +1,20 @@
-<problem>
-<script type="loncapa/perl"># Enter computations here 
+<problem>
+<script type="loncapa/perl">$z=&random(1,10,1);
+$constant=&random(1,10,1);
+# y=x+z-constant, solving for x, x=y-z+constant, prettyconstant is for simplifying
+$prettyconstant=$constant-$z;
+$x="y+$prettyconstant";
+# code below substitutes '+-' and '-+' for '-'.  This is used in display of answer
+$x=~s/\+-/-/g;
+$x=~s/-\+/-/g;</script>
+
+<startouttext />If z=$z and y=x+z-$constant, what does x equal?  
+<endouttext />
+
+<formularesponse samples="y@-5:5#10" answer="$x">
+    <responseparam decription="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
+    <textline size="25" />    
+</formularesponse>
+
+</problem>
 
-</script>
-<startouttext />Enter Question Text Here.  <endouttext />
-<formularesponse answer="$answer" id="11" samples="">
-    <responseparam name="tol" type="tolerance" description="Numerical Tolerance" default=".0001" />
-    <textline size="50" />
-    <hintgroup>
-    </hintgroup>
-</formularesponse>
-
-</problem>