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In Mathematics / Middle School | 2014-08-14

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 traveling at a constant speed of 90 km/h.

Write an equation that could be used to determine how much time in hours (t) the car travels until it catches up to the truck.

Asked by Lupe512

Answer (1)

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

Answered by pepe11 | 2024-06-10

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