Question

There are 5 friends A, B,C,D and E. And they are going to cross a bambo bridge in a new year night. which is almost retired. Only two man can cross the bridge in same time. And there is only one lamp with them. If A needs 4 min , B needs 5
min, C needs 2 min ,D needs 7 min and E needs 6 min to cross the bridge then find out the littlest time need them to crossed the bridge .


Give answer with explanation.

Answer 1

Answer

SIMPLE

C takes very less time so!!

First A&C will cross the bridge which takes 4min

again, C will come on other side or to the friends takes 2 min

again, C&B will cross the bridge which takes 5 min

again, C will come on other side or to the friends takes 2 min

again, C&D will cross the bridge which takes 7 min

again, C will come on other side or to the last friends takes 2 min

finally, C&E will cross the bridge which takes 6 min

IN ALL, 28 MIN WILL REQUIRED TO CROSS THE BRIDGE

MARK AS BRAINLIST