diff --git a/zadanie_1.py b/zadanie_1.py
index 7b6e40a..b94ea96 100644
--- a/zadanie_1.py
+++ b/zadanie_1.py
@@ -76,4 +76,18 @@ def find_most_expensive_item(orders: list[dict]) -> tuple[str, float]:
     if not orders:
         return ('', 0.0)
     most_expensive = max(orders, key=lambda x: x['price'])
-    return (most_expensive['item_name'], most_expensive['price'])
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+    return (most_expensive['item_name'], most_expensive['price'])
+
+
+# 6. Применение скидки ко всем заказам (возвращает новый список)
+def apply_discount(orders: list[dict], discount_percent: float) -> list[dict]:
+    """
+    Уменьшает поле 'total' на discount_percent.
+    Возвращает новый список заказов, не изменяя исходный.
+    """
+    discounted_orders = []
+    for order in orders:
+        new_order = order.copy()
+        new_order['total'] = order['total'] * (1 - discount_percent / 100.0)
+        discounted_orders.append(new_order)
+    return discounted_orders
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