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493 WorkRate1 |
Name : _________________ |
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20 people can do a job in 9 days. How many days would it take if there were only 4 people? |
15 people can do a job in 8 days. How many days would it take if there were only 5 people? |
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| 493 45 36 32 44 10 ( 167 ) 24 72 77 54 30 ( 257 ) [[ 424 ]] | ||
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