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307 WorkRate1 |
Name : _________________ |
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12 people can do a job in 8 days. How many days would it take if there were only 3 people? |
21 people can do a job in 7 days. How many days would it take if there were only 7 people? |
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| 307 32 30 15 28 16 ( 121 ) 21 35 84 42 30 ( 212 ) [[ 333 ]] | ||
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