Is the average speed of a car greater than 30 mph ?
(1) The distance is less then 3,500 miles
(2) The driving hour is greater than 100 hours
I have simply picked up the answer with a thought that I can get a speed once distance and time are given.. It was a too pure idea?
Please give me advanced thoughts how I can change my approach..
My choice is C.. but the answer is given as E.. I can't fully accept this, though... Please SOS..
Is D/T > 30?
Stat 1: Doesn't tell us anything about T; insuff.
Stat 2: Doesn't tell us anything about D; insuff.
If D = 1, T = 200 then D/T <30> 30