difficult DS. please help!

[ss1]

Yes i get it now, thank you. i should have plugged in more. what about the train problem?

[Fiver]

Originally Posted by ss1

what about the train problem?

dep from S: 7:08 EST (eastern standard time), arrival at T: 08:10
The table above shows the morning schedule for train X. If Juan took train X on Monday morning, did he arrive at station T on schedule?
(1) Juan arrived at station T on Monday morning 1 hour and 2 minutes after he left station S.
(2) Juan arrived at his office at 8:30 (EST) on Monday morning, which was 20 minutes after he arrived at station T.

The question is whether Juan arrived on schedule, that is, whether he arrived at 8:10.
Stmt1] Insufficient. It only tells us that the net travel time was as per schedule. It does not confirm the time that the train left station S or the time that the train arrived at station T.
Stmt2] Sufficient. Assuming that he arrived on the same monday that he left, it answers our question in yes.
My answer is B.