Janet is attempting to grow 15 lettuce plants in her garden. She plants 5 seeds on July 1, 5 seeds on July 6, and the final 5 seeds on July 9. The first 5 lettuce plants are ready to harvest on July 22 - the exact date Janet planned or in her garden journal. Based on this harvest dat, how long does it take lettuce plants to fully mature for seeds? What percentage of Janet’s lettuce plants was ready to harvest on July 22?

What percentage was not ready?

When is it likely that the other lettuce plants will be ready to harvest?