Two trains leave stations 390 miles apart at the same time and travel toward each other. One train travels at 70 miles per hour

Question

4 years ago

13

while the other travels at 80 miles per hour. How long will it take for the two trains to meet?
Do not do any rounding.

2 answers:

elena-14-01-66 [18.8K] · Answer 1 · 2022-03-08T17:10:05+03:00

8 0

Answer:

2.6 hours ( or 2 hours 36 minutes).

Step-by-step explanation:

The combined speed is 70+80 = 150 mph.

Speed = distance / time, so time = distance / speed.

So the time when they will meet

= 390 / 150

= 2.6 hours.

scoundrel [369] · Answer 2 · 2022-03-08T14:41:14+03:00

5 0

Answer:

Let's denote:

x: the time both trains traveled.

Then, we have:

70x + 80x = 390

=> 150x = 390

=> x = 390/150 = 2.6 hour