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as a basis and since the time, t, is the same for both travellers. you can set up the proportion as follows:
Where: d1 = 270 miles, d2 = 330 miles, r1 is Leon's speed and r2 is Pat's speed.
But, Pat's speed (r2) is 10 mph more than Leon's speed. So, r2 = r1 + 10
Simplify and solve for r1 (Leon's speed)
Subtract 270r1 from both sides.
Divide both sides by 60.
Leon's speed is 45 mph.
Pat's speed is 45 mph + 10 mph = 55 mph.
The travel times should be the same for both travellers.
= 6 hours
= 6 hours.