Ask Question
30 July, 02:31

A woman jogs for 2 km at 8 km/h and then walks for 2 km

at 6 km/h. What is her average speed for the entire trip?

+2
Answers (1)
  1. 30 July, 02:46
    0
    6 6/7 km/h

    Step-by-step explanation:

    The relations between speed, time, and distance are ...

    time = distance/speed

    speed = distance/time

    __

    So, to find the average speed, we need to know the total distance and the total time. The distances are given, but we need to compute the times.

    time jogging = (2 km) / (8 km/h) = 1/4 h

    time walking = (2 km) / (6 km/h) = 1/3 h

    Then the woman's average speed is ...

    average speed = (total distance) / (total time) = (2 km + 2 km) / (1/4 h + 1/3 h)

    = (4 km) / (7/12 h) = 48/7 km/h

    = 6 6/7 km/h
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A woman jogs for 2 km at 8 km/h and then walks for 2 km at 6 km/h. What is her average speed for the entire trip? ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers