What is the ratio of water to concrete mix?

The typical water-to-concrete mix ratio is about 0.4 to 0.6 by weight, meaning for every 100 pounds of cement, you would use 40 to 60 pounds of water. This ratio can vary based on the specific requirements of the project, including workability and strength. It's important to follow the guidelines provided for the specific concrete mix being used to achieve optimal results.