diff --git a/exercises/quiz1.rs b/exercises/quiz1.rs
index dbb5cdc9..41e8a556 100644
--- a/exercises/quiz1.rs
+++ b/exercises/quiz1.rs
@@ -10,10 +10,14 @@
 // Write a function that calculates the price of an order of apples given
 // the quantity bought. No hints this time!
 
-// I AM NOT DONE
-
 // Put your function here!
-// fn calculate_price_of_apples {
+fn calculate_price_of_apples(quantity: i32) -> i32 {
+    if quantity > 40 {
+        quantity
+    } else {
+        quantity * 2
+    }
+}
 
 // Don't modify this function!
 #[test]