500
What is wrong with the following experiment:
Luke wants to test the effectiveness of different paper towels. He uses 3 different types - Bounty, Mr Clean and Wiper-Upper. He uses the bounty to wipe up 100 mL of coke, Mr Clean to wipe up 100 mL of coke, and then he runs out of coke so he uses the Wiper-upper to wipe up 100 mL of water.
What is he used different liquids