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diff --git a/ap-computer-science-a-exam/q1.txt b/ap-computer-science-a-exam/q1.txt
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+WY5V8181
+HR
+
+(a) 
+
+public double getCompoundAvg(String comp){
+    int ct = 0;
+    double totalTemp = 0;
+    for (Trial trial : trialList){
+        if (trial.getCompound() != comp) continue;
+        ct++;
+        totalTemp += trial.getTemp();
+    }
+    if (ct > 0) return totalTemp/ct;
+    else return -1;
+}
+
+(b)
+
+public String getCompoundWithHighestAvg(){
+    double max = -1; // less than all non-negative temperatures.
+    String compound;
+    for (String curCompound : getCompoundList()){
+        double avg = getCompoundAvg(curCompound);
+        if (avg > max){
+            max = avg;
+            compound = curCompound;
+        }
+    }
+    return compound;
+}
+
+(c)
+
+The programmer would need to add the amount of compound used as a
+private instance variable (with a getter) in Trial (which would be
+initialized in its constructor). ScienceExperiment would hold the method
+`public double getCompoundAmountUsed(String compoundName)` which would
+sum, for all Trials in trialList with the same compoundName as given,
+the value of trial.getAmountUsed(), and return that value.