Parakrima band members are late for a concert in the evening. On their way, they come across a cracked bridge which has no lighting. The bridge is strong enough to hold at most two of them, and they have only one torch with them. Andy can get across the bridge in 2 minutes, Sandy takes 3 minutes, Kandy takes 6 minutes, but Mandy takes 9 minutes. Two band members together can move only as fast as the slower between the two, and one band member must be carrying the torch during the crossing. The band crosses the bridge in such a manner that the total time taken is minimum.

Who are the last two persons to move across the bridge?

Option 1 - <p><span lang="EN-IN">Kandy, Mandy</span></p>
Option 2 - <p><span lang="EN-IN">Andy, Sandy</span></p>
Option 3 - <p><span lang="EN-IN">Kandy, Sandy</span></p>
Option 4 - <p><span lang="EN-IN">None of these</span></p>
1 Views|Posted 6 months ago
Asked by Shiksha User
1 Answer
P
6 months ago
Correct Option - 2
Detailed Solution:

Sandy and Andy are the last to cross the bridge.

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