a company employing 1200 workers increased the number of workers by 15% how many workers does it now employ
To find out how many workers the company now employs, we need to calculate the 15% increase of the original number of workers and then add it to the original number of workers.
15% of 1200 workers is (15/100)*1200 = 0.15*1200 = 180 workers.
Adding this increase to the original number of workers, the company now employs 1200+180 = <<1200+180=1380>>1380 workers. Answer: \boxed{1380}.