i need help thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!
i need help thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is : |
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i need help thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is : |
||||||||||||||||
|
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