Then condition 1. tells us that::
Note enough information as it stands to find t.
Condition 2. tells us that the same distance can be covered in 1 hour less time at 80 miles per hour so:
Not enough information in this to find t, but with the previous equation we
have a pair of simultaneaou equations which will allow us to find both d and t.
from the first equation d=72t. Substitute this into the second:
or t=10 hours
RonLThe multiple choice answers are (it's a GMAT problem):
A. Statement 1 is enough, but not statement 2.
B. Statement 2 is enough, but not statement 1.
C. Both Statement 1 and 2 are needed to answer this question.
D. Either statement can be used to answer this question.
E. Neither statement can be used to answer this question.
I chose E, but this exam says that the answer is C. I just don't see how this can be solved without a total distance and a time.
Thanks in advance.