Riddle: Mary was working in a chemistry lab with a mixture of chemicals that was 90% water and weighed 20 pounds. After returning to the lab from a weekend break, she calculated the mixture was now 50% water. How much does the mixture now weigh? For purposes of this puzzle, assume the non-water part of the mixture was not affected by evaporation.
Rating: 100%
Rating: 100%
Rating: 75%
Riddle: A house full, a yard full, a chimney full, no one can get a spoonful.
Rating: 75%
Riddle: All about, but cannot be seen. Can be captured, but cannot be held. No throat, but can be heard.
Rating: 100%
Riddle: Almost everyone sees me without noticing me, For what is beyond is what he or she seeks. What am I?
Rating: 100%