Question 1150545
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The distances are the same; the speeds are in the ratio 120:144 = 5:6.  That means the times are in the ratio 6:5.<br>
Charlene took 50 minutes at the higher speed, so Hillary took 60 minutes.<br>
So Charlene took 10 minutes less than Hillary; since Hillary left at 10am, and since they arrived at the same time, Charlene left at 10:10am.<br>