SOLUTION: Mandy begins bicycling west at 30 mph at 11:00 am. If Liz leaves from same point 20 minutes later bicycling west at 36 mph, when will she catch Mandy?

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Question 797497: Mandy begins bicycling west at 30 mph at 11:00 am. If Liz leaves from same point 20 minutes later bicycling west at 36 mph, when will she catch Mandy?
Found 2 solutions by rfer, Alan3354:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
10 mile lead
6 mph overtake speed
10/6=1 2/3 hrs
11:00+1:40=12:40pm

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
10 mile lead
6 mph overtake speed
10/6=1 2/3 hrs
11:20+1:40 = 1:00pm