Placement Papers - Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimu

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Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge.

Total Answers and Comments: 13

Last Update: November 10, 2009 Asked by: lakshmienator

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Submitted by: Stelone B R

Send the 17 and 3 first.. After 3 min, send 7, after 10 minutes send 13... So within 17 min 3 persons crossed..They were 3,7 and 17 and the remaining person will cross the bridge in 6 another minutes.. Therefore total and minimum time required is 17+6=23 minutes..

Above answer was rated as good by the following members:
selvakumar_2008, neena paul, vimalesan, velkanesh

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November 04, 2007 22:40:49

Stelone B R

RE: Four persons can cross a bridge in 3,7,13,17 minu...

Send the 17 and 3 first.. After 3 min send 7 after 10 minutes send 13... So within 17 min 3 persons crossed..They were 3 7 and 17 and the remaining person will cross the bridge in 6 another minutes.. Therefore total and minimum time required is 17+6 23 minutes..

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May 17, 2008 08:16:59

selvakumar_2008

Member Since: May 2008 Contribution: 3

RE: Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge.

ans is 57minutes

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May 17, 2008 16:39:58

ashutosh148

Member Since: December 2007 Contribution: 1

RE: Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge.

forty

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May 23, 2008 11:57:13

srilathapillapalem

Member Since: May 2008 Contribution: 1

RE: Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge.

may be 24min....
once 13 and 17 will go...then 3 & 7..totally 17+7

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June 03, 2008 06:12:47

madure

Member Since: June 2008 Contribution: 4

RE: Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge.

ten

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0 1

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June 03, 2008 12:48:35

sravani811

Member Since: March 2008 Contribution: 8

RE: Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge.

23 min!

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June 04, 2008 05:38:55

sree24d

Member Since: June 2008 Contribution: 1

RE: Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge.

answer is: 20 min
first 17 and 7 are send then after 7 min send 13 after 10 min send 3.

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June 09, 2008 09:08:50

arjutendul

Member Since: June 2008 Contribution: 1

RE: Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge.

seventeen minutes

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June 18, 2008 05:56:47

shafeekhussain

Member Since: June 2008 Contribution: 1

RE: Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge.

20minutes

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June 19, 2008 08:27:31

#10

sandeep_yeleti

Member Since: June 2008 Contribution: 1

RE: Four persons can cross a bridge in 3,7,13,17 minutes. Only two can cross at a time. find the minimum time taken by the four to cross the bridge.

twenty three

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