Answered

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?

Verified Answer :

pepe11

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