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293 WorkRate1 |
Name : _________________ |
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18 people can do a job in 7 days. How many days would it take if there were only 3 people? |
21 people can do a job in 9 days. How many days would it take if there were only 7 people? |
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| 293 42 72 24 20 22 ( 180 ) 27 48 56 54 66 ( 251 ) [[ 431 ]] | ||
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