In a village having population of 1000, we found patients with ceain disease. The results of a new diagnostic test on that disease are also follows:rnTest Result: rnrn rnrnrnrnDiseasernrnrnPresentrnrnrnPresentrnrnrnrnrn+rnrnrn180rnrnrn400rnrnrnrnrn-rnrnrn20rnrnrn400rnrnrnrnrn What is the percent prevalence of disease?