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821 WorkRate1 |
Name : _________________ |
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21 people can do a job in 10 days. How many days would it take if there were only 7 people? |
21 people can do a job in 11 days. How many days would it take if there were only 3 people? |
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| 821 30 32 16 18 30 ( 126 ) 77 40 55 20 36 ( 228 ) [[ 354 ]] | ||
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