diff --git a/exercises/quiz1.rs b/exercises/quiz1.rs
index 4ee5ada..6e7a9b3 100644
--- a/exercises/quiz1.rs
+++ b/exercises/quiz1.rs
@@ -13,10 +13,11 @@
 //
 // No hints this time ;)
 
-// I AM NOT DONE
 
 // Put your function here!
-// fn calculate_price_of_apples {
+fn calculate_price_of_apples(apples: usize) -> usize {
+    if apples <= 40 { apples * 2 } else { apples }
+}
 
 // Don't modify this function!
 #[test]