carlos and maria drove a total of 217 miles in 4.1 hours. carlos drove the first part of the trip and averaged 52 miles per hour. maria drove the remainder of the trip and averaged 54 miles per hour. for approximately how many hours did maria drive? round your answer to the nearest tenth if necessary.
C = hours Carlos drove, M = hours Maria drove. 52*C+54*M = 217 C = 4,1-M 52*(4,1-M)+54M = 217 213,2-52M+54M = 217 217-213,2 = 54M-52M 3,8 = 2M M = 1,9 Maria drove 1,9h.
