Find the average speed for the whole journey

Aug 17th, 2015
Price: $5 USD

Question description

It took Malcom 3.5 hours to drive from city A to city B. On his way back to city A, he increased his speed by 20 km per hour and it took him 3 hours. 

Find the average speed for the whole journey. 

Tutor Answer

(Top Tutor) mickeygabz
School: Boston College

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