The population of 30,000 residing in a small town are spread over an area of 50 hectares. The critical rainfall intensity of 2 cm/hour is occurring uniformly in the area. Determine the ratio of wet and dry weather flow assuming that town is provided with a planned water supply at an average rate of 100 liters/day/person and 80 percent of the water supply is converted to the sanitary sewage. Take coefficient of runoff as 0.7 and peak rate of sewage two times the average rate of sewage. Use rational formula for calculating the rain water discharge.