Question

The eastbound train travels at 90 miles per hour. The westbound train travels at 100miles per hour. How long will it take for the two trains to be 532 miles apart? Do not round

Answer 1

alright, ill help you out :) 1 train = E. 2 train = W. (h for hour)
E = 90 x H
W = 100 x H

We can use guess and check until we find the answer that works. so first, lets try h = 3 (so three hours)
90 x 3 = 270, based on just this alone I can tell that it is wrong because the answer is 532. but 100 x 3 = 300 so together we know that it is lower than 3. because 300 + 270 = 570. so we can try 2 and 3/4 (so 2.75 for easy multiplication.)

90 x 2.75 = 247.5, and 100 x 2.75 = 275. this is also wrong, because there isn't a decimal in the final answer. so we can try another fraction until we get 532.

Answer 2

(give me a minute)

so lets go with 2 and 14/16 which is 2.875
so
try that math. :3

Answer 3

YOU ARE THE BEST ;)

Answer 4

no problem :) if you ever need help, just ask