There are 4 women having walking speed as 1min, 2min, 4min, 5min. If one or two women can cross bridge at a time with flashlight, then what is min. time required for 4 women to cross bridge without using flashlight?

Prabhu Masilamani

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• Jan 27th, 2011

6 min

ravi_lamba

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• Jan 27th, 2011

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