Working alone, Ryan can dig a 10 ft by 10 ft hole in five hours. Castel can dig the same hole in six hours. How long will it tak e them if they worked together? Explain too please, thanks.
2 answers:
<span>x/5+x/6=1 6x+5x=30 11x=30 x=30/11 x=2 8/30 =2 8/30 hours 8/30 hr=16 minutes 2 hours 16 minutes. Hope this helped. </span>
. Rates: Ryan: 1 hole per 5 hours Castel: 1 hole per 6 hours . Let x = time if working together then x(1/5 + 1/6) = 1 x(6 + 5) = 30 11x = 30 x = 30/11 x = 2.7273 hours or x = 2 hours and 44 minutes
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