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391 WorkRate |
Name : _________________ |
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If Ann does a job in 4 days, and Bob does it in 7 days, how long do they take together? (Nearest to the 10th...) |
If Ann does a job in 7 days, and Bob does it in 7 days, how long do they take together? (Nearest to the 10th...) |
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| 391 2.5 3.1 1 2.4 2 ( 11 ) 3.5 1.6 1.2 1.7 4.1 ( 12.1 ) [[ 23.1 ]] | ||
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