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word problem

by sud21 » Thu Jan 26, 2012 7:33 am
G and R went to a same position for a picnic. G went by bike and R drove a car. Did R arrive there earlier than G?
1). G start out 30 minutes earlier than R
2). The speed of G is 10m/h, and the speed of R is 30 m/h
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Source: — Data Sufficiency |
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by mj78ind » Thu Jan 26, 2012 8:11 am
sud21 wrote:G and R went to a same position for a picnic. G went by bike and R drove a car. Did R arrive there earlier than G?
1). G start out 30 minutes earlier than R
2). The speed of G is 10m/h, and the speed of R is 30 m/h
Stmt 1 - G could be starting much farther or nearer than R, and the speeds are also unknown. Hence INSUFFICIENT.

Stmt 2 - G has to cover a total of 0.1 miles more and R 10 miles, G reaches faster, similarly flip that and R reaches first. INSUFFICIENT.

Stmt 1 and 2 - essentially G has a lead of 5 miles over R. If the total distance for G and R is 6 miles. G reaches faster, however if total distance is 30 miles R reaches first. INSUFFICIENT.

Hence E
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by ArunangsuSahu » Thu Jan 26, 2012 9:51 am
First of all we don't know if the starting point is same or not

(E) is the answer
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