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390 WorkRate1 |
Name : _________________ |
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18 people can do a job in 9 days. How many days would it take if there were only 3 people? |
28 people can do a job in 9 days. How many days would it take if there were only 7 people? |
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| 390 54 14 40 54 44 ( 206 ) 36 70 24 35 56 ( 221 ) [[ 427 ]] | ||
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