Atrain leaves a station and travels north at 50 kmh four hours later a second train leaves on a paralel track and travels north at 90 km hr how far from the station will they meet?
to fa c e yourself with the problem complete the following chart
distance
rate
time
equation
slow train
fast train

Step-by-step explanation:

50 X 4= 200

90 X 5=450

50 X 5=250

200 + 250 = 450

Therefore it takes 5 hours for train B which is the train moving at 90 km per hr  to catch up to train A.

.5 lb

step-by-step explanation:

12 in / 6 in =2 in

.25 x 2 = .5 lb

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.