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anonymous
 one year ago
Nathaniel can weld a railing in 75 minutes. Brenda can weld a railing 25 minutes faster. If they work together, how many minutes does it take them to weld the railing?
anonymous
 one year ago
Nathaniel can weld a railing in 75 minutes. Brenda can weld a railing 25 minutes faster. If they work together, how many minutes does it take them to weld the railing?

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amoodarya
 one year ago
Best ResponseYou've already chosen the best response.0\[N=\frac{1}{75} per \space \min\\B=\frac{1}{7525}per \space \min\\N+B =\frac{1}{75}+\frac{1}{50}\\final \space answer =\frac{1}{\frac{1}{75}+\frac{1}{50}}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So what is the answer if the choices are 25 minutes 30 minutes 50 minutes 150 minutes

amoodarya
 one year ago
Best ResponseYou've already chosen the best response.01/75+1/50=1/30 so ...?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0150 is the cd...sooo hold on

amoodarya
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{1}{75}+\frac{1}{50}=\frac{1}{25}(\frac{1}{3}+\frac{1}{2})=\frac{1}{30}\\\frac{1}{\frac{1}{75}+\frac{1}{50}}=\frac{1}{\frac{1}{30}}=30\]
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