A car traveled at a constant speed of 88 feet/second. Did it finish a 40 miles trip in T hours?
(1mile=5280 feet)
1). T<45
2). T>42
5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILS
word problem
This topic has expert replies
-
sud21
- Master | Next Rank: 500 Posts
- Posts: 344
- Joined: Sat Nov 12, 2011 3:21 am
- Thanked: 1 times
- Followed by:2 members
Distance = 40*5280 = 211200 feet. Speed = 88 Time= 211200/88 = 2400 seconds = 40 mins.
St.(1) Time is 40 mins which is less than 45 hours. Sufficient.
St.(2) Time is more than 42 hours. Not sufficient.
Ans. A
St.(1) Time is 40 mins which is less than 45 hours. Sufficient.
St.(2) Time is more than 42 hours. Not sufficient.
Ans. A
88 fps = 60 mph
=> 40 miles trip is completed in 40 mins
1) If T = 30, trip is not completed in T hours
If T = 41, trip is completed in T hours
different answers for different values of T. NOT SUFFICIENT
2) For T > 45, the trip will be completed in T hours not matter what the value of T is.
IMO B
=> 40 miles trip is completed in 40 mins
1) If T = 30, trip is not completed in T hours
If T = 41, trip is completed in T hours
different answers for different values of T. NOT SUFFICIENT
2) For T > 45, the trip will be completed in T hours not matter what the value of T is.
IMO B
