If it is noon solar time at 50 degrees W longitude what is the solar time at 70 degrees W?

Solar time is determined by the position of the sun, which changes with longitude. For every degree of longitude, the solar time shifts by approximately 4 minutes. Therefore, if it is noon at 50 degrees W, it would be 4 minutes earlier for each degree eastward to 70 degrees W, resulting in a total difference of 80 minutes (20 degrees × 4 minutes). Thus, the solar time at 70 degrees W would be 10:40 AM.