1000 people were asked their preferred method of exercise. The following table shows the results, grouped by age. 18-22 23-27 28-32 33-37 Total Run 54 40 42 66 202 Bike 77 68 90 70 305 Swim 28 43 50 52 173 Other 90 78 71 81 320 249 229 269 1000 Total 253 You meet a 19 year old who took the survey. What is the probability that she prefers running? Please express your answer in the form of a fraction (e.g. a/b)