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Two cars start off at the same point on a straight highway

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SVP
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Two cars start off at the same point on a straight highway [#permalink] New post 13 Jul 2004, 01:45
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Two cars start off at the same point on a straight highway facing opposite directions. Each car drives for 6 miles, takes a left turn, and drives for 8 miles. How far apart are the two cars?

(A) 2 miles
(B) 11 miles
(C) 14 miles
(D) 20 miles
(E) 26 miles
Intern
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 [#permalink] New post 13 Jul 2004, 02:50
I assumed they turn by 90 degrees
The distance between the cares is 2*(6^2+8^2)^(1/2)=20

If you notice that the triangles are 3/4/5 type you will solve the question in 10 sec.
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 [#permalink] New post 13 Jul 2004, 09:32
Valid assumption I would say!

I go with 20 too!
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 [#permalink] New post 13 Jul 2004, 09:55
1 min
Ans is 20
2SQRT(6^2+8^2)
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 [#permalink] New post 13 Jul 2004, 10:47
20 is correct
use the 3-4-5 rule for right triangles
  [#permalink] 13 Jul 2004, 10:47
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Two cars start off at the same point on a straight highway

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