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392 WorkRate1 |
Name : _________________ |
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21 people can do a job in 9 days. How many days would it take if there were only 3 people? |
35 people can do a job in 9 days. How many days would it take if there were only 7 people? |
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| 392 63 18 54 63 55 ( 253 ) 45 20 27 49 16 ( 157 ) [[ 410 ]] | ||
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