SOLUTION: This is word problem:
There are 4 people who need to get across a bridge at night time. They must travel two at a time, so one can walk the flashlight back across the bridge. Th
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-> SOLUTION: This is word problem:
There are 4 people who need to get across a bridge at night time. They must travel two at a time, so one can walk the flashlight back across the bridge. Th
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Question 50895: This is word problem:
There are 4 people who need to get across a bridge at night time. They must travel two at a time, so one can walk the flashlight back across the bridge. They have a total time of 18 minutes. What is the order they must take if each person takes the following time to cross:
Grandma- 10 minutes
Grandpa- 5 minutes
Chuck- 2 minutes
Sally- 1 minute Answer by darq(90) (Show Source):
You can put this solution on YOUR website! first: sally chuck - takes 2+1 (sally returns)
grandpa grandma - takes 10+2 (chuck returns)
sally chuck - takes 2
