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550 WorkRate1 |
Name : _________________ |
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15 people can do a job in 12 days. How many days would it take if there were only 5 people? |
21 people can do a job in 10 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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| 550 36 24 32 45 36 ( 173 ) 30 15 20 33 56 ( 154 ) [[ 327 ]] | ||
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