SOLUTION: Working alone, Ryan can dig a 10ft by 10ft hole in 5 hours. Castle can dig the same hole in six hours. How long word it take them if they worked together?
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Question 966399: Working alone, Ryan can dig a 10ft by 10ft hole in 5 hours. Castle can dig the same hole in six hours. How long word it take them if they worked together? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Add their rates of working:
Ryan's rate:
[ 1 hole dug ] / [ 5 hrs ]
Castle's rate:
[ 1 hole dug ] / [ 6 hrs ]
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Let = their time in hrs working together
Multiply both sides by
It will take them 2 hrs 44 min working together
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check:
OK
