Directions: Read the following passage and answer the following questions: Raghu, a car-cleaner, is very good in washing and cleaning car. He spends 20 hours in a week for cleaning cars. He works 5 days in a week. He cleans 80 cars in a week. How many cars Raghu washed daily?

• A. 16
• B. 18
• C. 19
• D. 20