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720 WorkRate1 |
Name : _________________ |
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30 people can do a job in 12 days. How many days would it take if there were only 6 people? |
28 people can do a job in 5 days. How many days would it take if there were only 7 people? |
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+( ) |
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( )+ |
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++[[ ]]++ |
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| 720 60 24 84 60 60 ( 288 ) 20 20 15 27 60 ( 142 ) [[ 430 ]] | ||
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