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789 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? |
21 people can do a job in 9 days. How many days would it take if there were only 3 people? |
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| 789 28 10 25 24 36 ( 123 ) 63 20 45 70 63 ( 261 ) [[ 384 ]] | ||
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