SOLUTION: "A" IS DRIVING 40 MPH. AFTER "A" AS DRIVEN 30 MILES, "B" STARTS DRIVING IN THE SAME DIRECTION AT WHAT RATE MUST "B" DRIVE TO CATCH UP TO "A" IN 5 HOURS?

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Question 123814: "A" IS DRIVING 40 MPH. AFTER "A" AS DRIVEN 30 MILES, "B" STARTS DRIVING IN THE SAME DIRECTION AT WHAT RATE MUST "B" DRIVE TO CATCH UP TO "A" IN 5 HOURS?

Answer by PBMathandscience(9) About Me  (Show Source):
You can put this solution on YOUR website!
In five hours, A will have driven 40mph * 5hours = 200 miles, plus the additional 30 mile head start, so A will have travelled a total of 230 miles. B must cover this same distance in 5 hours, so B's speed must be 230 miles/5 hours or 46 mph.