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20 Mar 2018, 06:41
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
64% (01:48) correct
36%
(01:51)
wrong
based on 292
sessions
History
Date
Time
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A vehicle averaged x miles per hour for 3/2 hours and y miles per hour for 5/2 hours on a nonstop trip of d miles. What was the average speed, in miles per hour, for the entire trip?
(1) x = y + 10
(2) d = 255
(1) x = y + 10
(2) d = 255
20 Mar 2018, 06:45
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Bunuel
16. Distance/Rate Problems
- Theory
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2 Simple GMAT Quant Questions That Will Help You Score Higher
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For more check below:
ALL YOU NEED FOR QUANT ! ! !
Ultimate GMAT Quantitative Megathread
General Discussion
20 Mar 2018, 06:56
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Bunuel
As this is a rate/time question, we'll need two out of rate, time and work to solve.
We'll look for a statement that gives us this information, a Logical approach.
We're given the speed as an equation with x and y, the total time ( = 3/2+5/2) and told that the distance is d.
To find out the speed, we need to know both x and y so we can calculate directly or d so we can calculate d/t
(1) this does not give us what we need.
Insufficient.
(2) we can now calculate distance/time = average speed.
Sufficient.
(B) is our answer.
