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510 WorkRate1 |
Name : _________________ |
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8 people can do a job in 9 days. How many days would it take if there were only 4 people? |
54 people can do a job in 11 days. How many days would it take if there were only 9 people? |
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| 510 18 27 35 77 45 ( 202 ) 66 21 28 14 18 ( 147 ) [[ 349 ]] | ||
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