Brainliest !A passenger train and a freight train leave at the same time from stations that are 270 km apart. The trains are travelling toward each other, and the rate of the passenger train is twice the rate of the freight train. If the trains pass each other in three hours, what is the rate of each train?

Passenger train 60 km/h.

Freight train 30 km/h.

Step-by-step explanation:

Let the rate of the freight train be x  km / hr the  passenger train's rate is 2x km/hr.

The combined speed = 3x km/hr, so we have the equation

speed = distance . / time

3x = 270 / 3

9x = 270

x = 30 km/h.

answer:

c. the third graph

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3