cans wrote:Is the number of seconds required to travel d1 feet at
r1 feet per second greater than the number of seconds
required to travel d2 feet at r2 feet per second?
(1) d1 is 30 greater than d2.
(2) r1 is 30 greater than r2.
Is d1/r1 > d2/r2?
Look for combinations that satisfy both statements:
Let d2=1, d1=31, r2=1, r1=31.
Is 31/31>1/1? No.
Let d2=1, d1=31, r2=2, r1=32.
Is 31/32>1/2? Yes.
Since the combinations above satisfy both statements, and in the first case the answer is No and in the second case the answer is Yes, insufficient.
The correct answer is
E.
Last edited by
GMATGuruNY on Wed Jun 08, 2011 5:34 am, edited 1 time in total.
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