Ask Question
22 April, 08:34

Carlos and maria drove a total of 197 miles in 3.8 hours. carlos drove the first part of the trip and averaged 55 miles per hour. maria drove the remainder of the trip and averaged 47 miles per hour. for approximately how many hours did maria drive? round your answer to the nearest tenth if necessary. a. 2.8 hours b. 2.1 hours c. 1.5 hours d. 2.3 hours

+3
Answers (1)
  1. 22 April, 09:09
    0
    Carlos driving time = Xh, Maria driving time = Yh.

    55m/h*Xh + 47m/h*Yh = 197m

    Together, they both drove 3,8 hours, so Carlos drove 3,8 hours minus the time Maria drove;

    55m/h * (3,8h-Yh) + 47m/h*Yh = 197m

    55m/h*3,8h - 55m/h*Yh + 47m/h*Yh = 197m

    209m - 8m/h*Yh = 197m

    8mY = 209m - 197m

    8mY = 12m

    Y = 12m/8m

    Y = 1,5

    The correct answer is 1,5 hours.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Carlos and maria drove a total of 197 miles in 3.8 hours. carlos drove the first part of the trip and averaged 55 miles per hour. maria ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers