Here's how to solve the problem:Step 1: Calculate the total volume of the mixture.Total volume = Volume of orange juice + Volume of waterTotal volume = 150 ml + 350 ml = 500 mlStep 2: Calculate the volume percentage of orange juice.Volume percentage of orange juice = (Volume of orange juice/Total volume) × 100Volume percentage of orange juice = (150 ml/500 ml) × 100 = 30%Final answer:The percentage by volume of orange juice in the drink is 30%.