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A can do a job in 6 days and B in 8 days . They work together . Find A's share if total amount given to them is Rs 3500.​

Answer»

align="ABSMIDDLE" alt="\sf{\BOLD{\green{\underline{\underline{Given}}}}}" class="latex-formula" id="TexFormula1" src="HTTPS://tex.z-dn.net/?F=%5Csf%7B%5Cbold%7B%5Cgreen%7B%5Cunderline%7B%5Cunderline%7BGiven%7D%7D%7D%7D%7D%20" title="\sf{\bold{\green{\underline{\underline{Given}}}}}">

  • A can do the work in 6 days
  • B can do the work in 8 days
  • Total amount = Rs. 3500

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\sf{\bold{\green{\underline{\underline{To\:Find}}}}}

  • A's share = ??

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\sf{\bold{\green{\underline{\underline{Solution}}}}}

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\sf{\red{\boxed{\bold{One\: day\: work =\dfrac{1}{Total\:  time}}}}}

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\sf:\implies \: {\bold{ A's\:one\: day: work\: = \: \dfrac{1}{6} }}

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\sf:\implies \: {\bold{ B's\:one\: day: work\: = \: \dfrac{1}{8} }}

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  • Ratio of their works

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\sf:\implies \: {\bold{ A : B = \: \dfrac{\dfrac{1}{6}}{\dfrac{1}{8}}}}

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\sf:\implies \: {\bold{ A : B = \: \dfrac{1\times 8}{6\times 1} }}

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\sf:\implies \: {\bold{ A : B = \: \dfrac{8}{6} }}

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\sf:\implies \: {\bold{ A : B = \: \dfrac{4}{3} }}

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  • let A's work be 4x and B's work be 3x

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ATQ:-

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4x + 3x = 3500

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7x = 3500

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x = 3500 / 7

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x = 500

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A's share = 4x = 4 × 500 = Rs. 2000

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\sf{\bold{\green{\underline{\underline{Answer}}}}}

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  • A's shares = Rs. 2000


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