SOLUTION: Car A is going 78 mph and is 500 feet behind car B going 60 mph-how long will it take Car A to catch Car B?

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Question 352503: Car A is going 78 mph and is 500 feet behind car B going 60 mph-how long will it take Car A to catch Car B?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Rate*Time=Distance
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.
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R%5Ba%5D%2At=D%5Ba%5D
D%5Ba%5D=78t
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.
R%5Bb%5D%2At=D%5Bb%5D
D%5Bb%5D=60t
Convert 500 feet to miles to be consistent.
D%5Ba%5D=D%5Bb%5D%2B500%2F5280
Substitute and solve for t.
78t=60t%2B25%2F264
18t=25%2F264
t=25%2F4752 hrs
or approximately,
t=0.00526 hrs
t=18.9 seconds