Problema Solution
Tyrell exercised this week by walking and biking. He walked at a rate of 4 mi/hr and biked at a rate of 12 mi?hr. The total distance he covered both walking and biking was 36 miles, and Tyrell spent one more hour walking than biking. How many hours did Tyrell spend on each activity?
Answer provided by our tutors
Let
x = the hours Tyrell spent biking
x + 1 = the hours Tyrell spent walking
The total distance he covered both walking and biking was 36 miles:
4(x + 1) + 12x = 36 (since distance = time*average speed (rate))
........
click here to see the equation solved for x
........
x = 2 hr
x + 1 = 2 + 1 = 3 hr
Tyrell spent 2 hours biking and 3 hours walking.