At the "Neverlate" railroad station there are two tracks, A and B, both going to the city. At 7 A.M. a train leaves on each track, at the same time for the city. After that, the trains on track A leave every 8 minutes abd those on track B leave every 9 minutes. Mr. Cortez arrives at the train station at 8:25 A.M.He will have to wait _______minutes for the next train.

For track A, count by 8s til you reach a time just after 8:25. For track B, count by 9's until you reach a time just after 8:25.

3 minutes

To find out how long Mr. Cortez will have to wait for the next train, we first need to determine the time elapsed between 7 A.M. and 8:25 A.M.

Step 1: Calculate the time between 7 A.M. and 8 A.M.
7 A.M. to 8 A.M. is a one-hour interval, so the time elapsed is 60 minutes.

Step 2: Calculate the time between 8 A.M. and 8:25 A.M.
There are 25 minutes between 8 A.M. and 8:25 A.M.

Step 3: Add the time elapsed between 7 A.M. and 8 A.M. to the time elapsed between 8 A.M. and 8:25 A.M.
60 minutes + 25 minutes = 85 minutes

Now that we know it has been 85 minutes since the trains started leaving at 7 A.M., we can calculate the number of trains that have already left from each track.

Step 4: Calculate the number of trains that have left on track A.
Since trains on track A leave every 8 minutes, and it has been 85 minutes, we can divide 85 by 8.
85 / 8 = 10 with a remainder of 5

This means that 10 trains have left on track A, and there are 5 minutes remaining until the next train on track A leaves.

Step 5: Calculate the number of trains that have left on track B.
Since trains on track B leave every 9 minutes, and it has been 85 minutes, we can divide 85 by 9.
85 / 9 = 9 with a remainder of 4

This means that 9 trains have left on track B, and there are 4 minutes remaining until the next train on track B leaves.

Step 6: Compare the remaining time for the next train on each track.
Since the remaining time for the next train on track A is 5 minutes and the remaining time for the next train on track B is 4 minutes, Mr. Cortez will have to wait the shorter time, which is 4 minutes, for the next train.

Therefore, Mr. Cortez will have to wait 4 minutes for the next train.