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139 WorkRate1 |
Name : _________________ |
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36 people can do a job in 11 days. How many days would it take if there were only 9 people? |
63 people can do a job in 7 days. How many days would it take if there were only 9 people? |
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| 139 44 30 27 36 35 ( 172 ) 49 48 66 28 44 ( 235 ) [[ 407 ]] | ||
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