Soldiers on a Bridge – Problem for #mathsweek

Soldiers on a Bridge

4 battle weary soldiers are returning to base camp with varying degrees of injury at night.

They come across a dangerous, weak bridge which they must cross. There is no alternative.

Only 2 may cross at any one time due to the poor condition of the bridge and when 2 cross, 1 must return with the torch for those remaining.

Due to their injuries, the men take different times to cross and both must travel at the speed of the slower man.

Their times are as follows:

Soldier A – 1 mins

Soldier B – 2 mins

Soldier C – 5 mins

Soldier D – 10 mins

Your task is to get all 4 soldiers across in just 17 minutes.

Trust me, it can be done!

Use the comment box to submit your answer.

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