1. Three growth media (A, B, and C) having different nutrient compositions were each inoculated with 200 E.coli cells and incubated at 37 degrees C. In medium A, cells double every 20 minutes, in medium B, cells double every 40 minutes, and in medium C, cells double every 60 minutes. Determine the time required for each culture to reach a final cell number of 204,800..