580 WorkRate1 |
Name : _________________ |
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15 people can do a job in 9 days. How many days would it take if there were only 5 people? |
63 people can do a job in 10 days. How many days would it take if there were only 9 people? |
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580 27 40 18 20 30 ( 135 ) 70 36 55 24 36 ( 221 ) [[ 356 ]] | ||
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