Flash Light

1)There are 4 women to cross bridge and Flashlight.One or two women can cross the bridge with the flash light?

1)There are 4 women to cross bridge and Flashlight.One or two women can cross the bridge with the flash light at a time.those have different walking speeds.The pair must walk at the rate of slower pace
woman1:1 minutes
woman2:2 minutes
woman3:5 minutes
woman4:10 minutes
Then what is the minimum required time to cross the bridgeall the 4 women without throwing flashlight?

17 minutes.

1&2 = 2
1 returning = 1
5&10 = 10
2 returning to get 1 back = 2
1&2 = 2
time taken = 2+1+10+2+2 = 17 minutes.

OR

1&2 = 2
2 returning = 2
5&10 = 10
1 returning to get 2 back = 1
1&2 = 2
time taken = 2+2+10+1+2 = 17 minutes.

George Clinton “flash light”

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