A glass was filled with 10 ounces of water, and 0.01 ounce of the water evaporated each day during a 20-day period. What percent of the original amount of water evaporated during this period?
I came to a conclusion that it would 20 days * 0.01 ounce/day = 0.2 ounce for 20 days. And to get the % evaporated it would be 0.2 * 100% which is 20% . But the answer is 2%, I am unable to understand why would it be 2%?