Jorge needs two different kinds of concrete: quick drying and slow drying. The quick-drying concrete mix calls for 2 pounds of dry cement, and the
quick-drying concrete and 3 times more slow-drying concrete than the mixes make.
slow-drying concrete mix calls for 1 pounds of dry cement. He needs 5 times more
2. How many pounds of dry cement mix will he need?
- Use the properties of real numbers to show how Jorge could compute this amount
mentally. Justify each step.
Derties of Real Numbers