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489 WorkRate1 |
Name : _________________ |
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12 people can do a job in 7 days. How many days would it take if there were only 4 people? |
54 people can do a job in 9 days. How many days would it take if there were only 9 people? |
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| 489 21 44 49 35 35 ( 184 ) 54 36 48 24 24 ( 186 ) [[ 370 ]] | ||
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