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412 WorkRate1 |
Name : _________________ |
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24 people can do a job in 12 days. How many days would it take if there were only 4 people? |
12 people can do a job in 9 days. How many days would it take if there were only 4 people? |
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| 412 72 56 32 45 36 ( 241 ) 27 36 18 33 24 ( 138 ) [[ 379 ]] | ||
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