Question 366285
A car and a truck leave the same place to travel on the same road, the truck at 35 m.p.h. and the car at 45 m.p.h.  If the car starts 1 hour after the truck, when will it overtake the truck?
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In 1 hour, the truck goes 35 miles.
The car gains on the truck at 10 mph (45 - 35)
35/10 = 3.5 hours
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It's not possible to find when, since no start time was given, but it's 3.5 hours after the car leaves, 4.5 hours after the truck's departure.