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529 WorkRate1 |
Name : _________________ |
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30 people can do a job in 9 days. How many days would it take if there were only 5 people? |
27 people can do a job in 12 days. How many days would it take if there were only 9 people? |
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| 529 54 28 25 60 72 ( 239 ) 36 66 84 36 35 ( 257 ) [[ 496 ]] | ||
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