- #1
Andyjimbo
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[SOLVED] Average speed
Hi, Please could someone enlighten me as to how to solve the following, given that the total time of the journey is not given?
A commuter drives to work 14 miles. Due to traffic, the commuter averages 25 miles per hour on the first 7 miles of the drive. How fast must the commuter go on average on the second half to average 40 miles per hour for the entire drive?
Many thanks
Hi, Please could someone enlighten me as to how to solve the following, given that the total time of the journey is not given?
A commuter drives to work 14 miles. Due to traffic, the commuter averages 25 miles per hour on the first 7 miles of the drive. How fast must the commuter go on average on the second half to average 40 miles per hour for the entire drive?
Many thanks