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811 WorkRate1 |
Name : _________________ |
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28 people can do a job in 7 days. How many days would it take if there were only 7 people? |
6 people can do a job in 9 days. How many days would it take if there were only 3 people? |
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| 811 28 77 40 55 14 ( 214 ) 18 40 35 42 60 ( 195 ) [[ 409 ]] | ||
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