SOLUTION: Brenda and Gillian live 1 mile apart along the same street. Brenda walks at a rate of 3 miles per hour and Gillian walks at a rate of 2.5 miles per hour. If they each leave their

Question 386424: Brenda and Gillian live 1 mile apart along the same street. Brenda walks at a rate of 3 miles per hour and Gillian walks at a rate of 2.5 miles per hour. If they each leave their own house at the same time, how long, to the nearest minute, will it take for them to meet?
Found 2 solutions by rfer, rajagopalan:
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
moving together at 5.5 mph
1/5.5=0.182 hrs
60*0.182=10.92=11 min
Answer by rajagopalan(174) (Show Source): You can put this solution on YOUR website!
Speed of Brinda 3 mph
Speed of Gillian 2.5 mph
Case 1 when they walk towards each other
approach velocity=3+2.5=5.5 mph
distance between them= 1 mile
time to cover the distance = 1/5.5=2/11 hour=(2/11)*60min=5.45*2=10.90==say 11 min
..
Case 2 if they start in same direction they will meet after infinite time
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