diff --git a/exercises/quiz1.rs b/exercises/quiz1.rs
index 4ee5ada7..16d29fb9 100644
--- a/exercises/quiz1.rs
+++ b/exercises/quiz1.rs
@@ -13,10 +13,14 @@
 //
 // No hints this time ;)
 
-// I AM NOT DONE
-
 // Put your function here!
-// fn calculate_price_of_apples {
+fn calculate_price_of_apples(amount: i32) -> i32 {
+    if (amount > 40) {
+        amount
+    } else {
+        amount * 2
+    }
+}
 
 // Don't modify this function!
 #[test]