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811 WorkRate1 |
Name : _________________ |
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21 people can do a job in 7 days. How many days would it take if there were only 7 people? |
21 people can do a job in 8 days. How many days would it take if there were only 3 people? |
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| 811 21 28 22 24 42 ( 137 ) 56 36 60 32 28 ( 212 ) [[ 349 ]] | ||
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