The scores for 20 students on a 50-point math test are 44, 37, 42, 35, 34, 38, 46, 50, 41, 36, 30, 48, 49, 39, 45, 31, 47, 40, 4 and 32. Part 1 of 3 (a) Find the percentile rank for a score of 42. th(st/nd/rd) A test score of 42 is equivalent to the 55 percentile. Part: 1/3 Part 2 of 3 (b) Find the percentile rank for a score of 47. th(st/nd/rd) ic equivalent to the percentile.