Answer:
1 12:37:pm
Explanation:
1)
let x = time that they will pass each other
distance travelled = speed * time
distance of train 1 = 70*x
distance of train 2= 90*x
distance travelled is equal to 900km
70x + 90x = 900
160x = 900
x=5.625
convert into hrs, minutes and seconds
5.625 hrs is equal to 5 hrs, 37 mins, and 30 seconds
add this time to 7:00 am to get the answer