Question

Someone please tell me why there is a 2 written for time and how and explain problem pls

Answer 1

Answer:

Because it is a 2 hour difference between 8:00 AM and to 10:00 AM.

Step-by-step explanation:

the variable r is for rate. As said in the problem, the east jet flies 40 km/h greater than the west jet. Then, you add both the distance of the east jet and the west jet which will give you 2480 km.

So the equation would be as given in the worksheet:

2(r+40)+2r=2480

Why is there a 2 you ask?

Well because the jets have been flying for 2 hours.