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571 WorkRate1 |
Name : _________________ |
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10 people can do a job in 10 days. How many days would it take if there were only 5 people? |
20 people can do a job in 11 days. How many days would it take if there were only 5 people? |
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| 571 20 28 50 18 30 ( 146 ) 44 35 20 48 16 ( 163 ) [[ 309 ]] | ||
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