SOLUTION: One road crew constructs 450 m of road bed in 12 h. If another crew works at the same rate, how long will it take them to construct another 250 m of road bed?

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Question 1196376: One road crew constructs 450 m of road bed in 12 h. If another crew works at the same rate, how long will it take them to construct another 250 m of road bed?
Found 2 solutions by Alan3354, josgarithmetic:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
One road crew constructs 450 m of road bed in 12 h. If another crew works at the same rate, how long will it take them to construct another 250 m of road bed?
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Depends on the sizes of the crews.

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
x hours for the two crews working together

%28450%2F12%2B450%2F12%29x=250

900x%2F12=250
90x%2F12=25
x=25%2812%2F90%29
x=3%261%2F3hours
Three hours twenty minutes