Aperson's intelligence quotient (i) is found by dividing mental age (m), as indicated by standard tests, by chronological age (c), and then multiplying this ratio by 100. the formula i = 100m c can be used. if the i range of a group of 12-year-olds is given by 80 ≤ i ≤ 120, find the range of the mental age of this group. (enter your answers from lowest to highest.)