Problema Solution
Tory and Emilio's motorboats travel at the same speed. Tory pilots her boat 40 km before docking. Emilio continues for another 4 hr, traveling a total of 90 km before docking. How long did it take Tory to navigate the 40 km?
Answer provided by our tutors
Let the speed = x km/h.
The time of Tory's travel = 40/x hours to dock.
Emilio pilots for another 4 hours = (40/x)+4) hours.
Emilio pilots 90 km for ((40/x)+4) hours means:
90/((40/x) + 4) = x
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click here to see the equation solved for x
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x = 12.5 km/h
Tory takes 40 /12.5 = 3.2 hours to travel distance of 40 km.