Mathematics, 15.12.2019 04:31, zara76
Working together, jack and ming can tar a roof in 6.16 hours. had she done it alone it would have taken ming 11 hours. find how long it would take jack to do it alone
Answers: 3
![\[\frac{1}{x}+\frac{1}{11}=\frac{1}{6.16}\]](/tpl/images/0419/2355/00eb0.png)
![\[\frac{1}{x}=\frac{4.4}{61.6}\]](/tpl/images/0419/2355/d42eb.png)
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Working together, jack and ming can tar a roof in 6.16 hours. had she done it alone it would have ta...
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