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Question Number 96454 by bemath last updated on 01/Jun/20

Answered by john santu last updated on 01/Jun/20

$$\mathrm{suppose}\mathrm{Team}\mathrm{B}\mathrm{spent}\mathbf{t}\mathrm{minutes}$$$$\mathrm{on}\mathrm{the}\mathrm{job}.\mathrm{Then}\frac{\mathbf{t}}{75}+\frac{90-\mathbf{t}}{150}=1$$$$\mathrm{Thus}\mathbf{t}=60\mathrm{minutes}\mathrm{and}\mathrm{so}$$$$\mathrm{Team}\mathrm{A}\mathrm{complete}\frac{30}{150}=\frac{1}{5}\mathrm{of}$$$$\mathrm{the}\mathrm{job}.\mathrm{So}\mathrm{m}+\mathrm{n}=6$$

Commented by bemath last updated on 01/Jun/20

$$\mathrm{thank}\mathrm{sir}$$

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