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algebra ia week 8 hw

 
 
TAmy的头像
algebra ia week 8 hw
TAmy - 2019年07月30日 Tuesday 19:51
 

Peter can paint a wall in 4040 minutes and John can paint the wall in 6060 minutes. If they work together for 1212 minutes, what percentage of the wall is left unpainted? Round your answer to the nearest percent.

 
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Re: algebra ia week 8 hw
ReynosoDavid - 2019年07月31日 Wednesday 22:52
 

What fraction of the wall can Peter paint in $1$ minute? What about John? Use these answers to figure out what fraction of the wall they can paint together in $1$ minute. 

 
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