Among the orders placed by Pacific Ltd, how many orders have been applied 5% discount ?
orders by Pacific Ltd refer to OrderNumber where Customer Names = 'Pacific Ltd'; applied 5% discount refers to Discount Applied = 0.05;
SELECT SUM(CASE WHEN T1.`Discount Applied` = 0.05 AND T2.`Customer Names` = 'Pacific Ltd' THEN 1 ELSE 0 END) FROM `Sales Orders` AS T1 INNER JOIN Customers AS T2 ON T2.CustomerID = T1._CustomerID