Answer
4.5 hours
Work Step by Step
time on bike = x
time walking = 6-x
$40x+(6-x)*4=186$
$40x+24-4x=186$
$36x+24=186$
$36x=162$
$36x/36=162/36$
$x=4.5$
$6-4.5=1.5$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.