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457 WorkRate1 |
Name : _________________ |
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20 people can do a job in 9 days. How many days would it take if there were only 4 people? |
30 people can do a job in 6 days. How many days would it take if there were only 6 people? |
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| 457 45 24 30 36 18 ( 153 ) 30 22 48 16 24 ( 140 ) [[ 293 ]] | ||
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