157 WorkRate1 |
Name : _________________ |
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27 people can do a job in 9 days. How many days would it take if there were only 9 people? |
12 people can do a job in 7 days. How many days would it take if there were only 4 people? |
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157 27 33 77 40 21 ( 198 ) 21 66 63 24 33 ( 207 ) [[ 405 ]] | ||
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