A sample of synthetic cholesterol was prepared consisting entirely of (+) cholesterol. Thi...

A sample of synthetic cholesterol was prepared consisting entirely of (+) cholesterol. This synthetic (+)cholesterol was mixed with some natural (−)-cholesterol. The mixture had a specific rotation of −13°. What fraction of the mixture was (+) cholesterol? (Note: You need to use the solution to Problem 7.4 for the specific rotation of (−) cholesterol.)