英语数学题1、An ant covers a distance of 90 metres in 3 hours. The average speed of the ant in decimetres per minute is_. 2、3、In a certain town some people were affected by a flu epidemic. In the first month 20% of the population contracted the flu whilst 80% were healthy.In the following month 20% of the sick people recovered and 20% of the healthy people contracted the disease.What fraction of the population is healthy at the end of the second month? 4、Mpho,
