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

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SVP
Joined: 03 Feb 2003
Posts: 1611
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Two cars start off at the same point on a straight highway [#permalink]  13 Jul 2004, 01:45
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
Joined: 07 Jul 2004
Posts: 42
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Kudos [?]: 15 [0], given: 0

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.
Director
Joined: 01 Feb 2003
Posts: 854
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Kudos [?]: 33 [0], given: 0

Valid assumption I would say!

I go with 20 too!
Director
Joined: 05 May 2004
Posts: 577
Location: San Jose, CA
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Kudos [?]: 32 [0], given: 0

1 min
Ans is 20
2SQRT(6^2+8^2)
SVP
Joined: 03 Feb 2003
Posts: 1611
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Kudos [?]: 74 [0], given: 0

20 is correct
use the 3-4-5 rule for right triangles
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