Two trains left a station at the same time. one traveled north at a certain speed and the other traveled south at twice that speed. after 4 hours, the trains were 600 miles apart. how fast was each train traveling?

Speed of northbound train is 50 mph and speed of southbound train is 100 mph

Solution:

Let "s" be the speed of northbound train

Given that the other traveled south at twice that speed

Then, 2s is the speed of south bound train

After 4 hours, the trains were 600 miles apart

Since the train has left station at same time,

Distance = 600 miles

Time taken = 4 hours

Distance is given by formula:

Therefore,

Thus speed of northbound train is 50 mph

Speed of southbound train = 2s = 2(50) = 100 mph

Thus speed of southbound train is 100 mph

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation: