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14 Jan 2018, 06:45
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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:
59% (01:39) correct
41%
(01:48)
wrong
based on 364
sessions
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Cyclist A leaves point X at 12 noon and travels at constant velocity in a straight path. Cyclist B leaves point X at 2 p.m. travels the same path at constant velocity, and overtakes cyclist A at 4p.m. At what speed was cyclist B traveling?
(1) Cyclist A traveled 15 miles in the first hour.
(2) The rate of cyclist B is twice that of cyclist A.
(1) Cyclist A traveled 15 miles in the first hour.
(2) The rate of cyclist B is twice that of cyclist A.
14 Jan 2018, 14:28
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Bunuel
We know the total time of B so all we need is their total distance.
We'll look for an answer that gives us this information, a Logical approach.
(1) Since A travels at a constant speed then we can multiply 15 by 4 hours to get the distance A cycled which is also the distance B cycled.
Sufficient!
(2) This gives us no information on the distance and is not helpful.
(in fact, it only restates information we already know as B travels the same distance as A in half the time = twice the rate)
Insufficient.
(A) is our answer.
15 Jan 2018, 00:00
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Cyclist A leaves point X at 12 noon and travels at constant velocity in a straight path. Cyclist B leaves point X at 2 p.m. travels the same path at constant velocity, and overtakes cyclist A at 4p.m. At what speed was cyclist B traveling?
(1) Cyclist A traveled 15 miles in the first hour.
(2) The rate of cyclist B is twice that of cyclist A.
Hi,
Distance covered by B in 2 hrs = distance covered by A in 4 hrs.
Therefore 2B=4A
OR B=2A where A and B are the speed of A and B
1.A=15 hence b=30;
sufficient;
2. repeats the given premise. insufficient.
(1) Cyclist A traveled 15 miles in the first hour.
(2) The rate of cyclist B is twice that of cyclist A.
Hi,
Distance covered by B in 2 hrs = distance covered by A in 4 hrs.
Therefore 2B=4A
OR B=2A where A and B are the speed of A and B
1.A=15 hence b=30;
sufficient;
2. repeats the given premise. insufficient.
