SOLUTION: Don started driving easy at 6am at a rate of 75 mph. If Dennis leaves the same place heading east at 8 am at a rate of 80 mph, how long will it take him to catch up to Don?

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Question 1015577: Don started driving easy at 6am at a rate of 75 mph. If Dennis leaves the same place heading east at 8 am at a rate of 80 mph, how long will it take him to catch up to Don?
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
Think about the description for the times. Don left early going slower, in contrast to Dennis.
Dennis travels only t hours, quantity of time for catchup.
             rate         time         distance
Don           75          t+2           d
Dennis        80           t            d

RT=D basic uniform travel rate rule.
If you know this and understand the data table, then you know what to do.