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A truck heads north at a constant speed of
80 km/h. A car leaves 20 minutes later
heading north along the same road and
travelling at a constant speed of 90 km/h.
Writr an equation that could be used
to determine how much time in hours( t) the car
travels until it catches up to the truck?
equation of the travel of the truck: y = 80.x (x in hours) equation of the travel of the car : y = 90(x - 1/3) when they meet: 80x = 90x - 30 => 10x = 30 => x = 3h They'mm meet after 3 hours
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