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247 WorkRate1 |
Name : _________________ |
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6 people can do a job in 9 days. How many days would it take if there were only 2 people? |
12 people can do a job in 9 days. How many days would it take if there were only 2 people? |
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| 247 27 21 42 56 60 ( 206 ) 54 36 32 33 30 ( 185 ) [[ 391 ]] | ||
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