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439 WorkRate1 |
Name : _________________ |
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8 people can do a job in 12 days. How many days would it take if there were only 4 people? |
28 people can do a job in 8 days. How many days would it take if there were only 7 people? |
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| 439 24 66 30 40 55 ( 215 ) 32 35 28 42 49 ( 186 ) [[ 401 ]] | ||
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