[tex]\sf{\bold{\green{\underline{\underline{Given}}}}} [/tex]
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______________________
[tex]\sf{\bold{\green{\underline{\underline{To\:Find}}}}} [/tex]
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______________________
[tex]\sf{\bold{\green{\underline{\underline{Solution}}}}} [/tex]
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W = 7a + 4b
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[tex]\sf \implies W - 4b = 7a [/tex]
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[tex]\sf \implies \dfrac{W - 4b}{7} = a [/tex]
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Option 1 :
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[tex]\sf \bigg( a = \dfrac{W - 4b}{7} \bigg) \neq \bigg( a = \dfrac{W - 7b}{4}\bigg) [/tex]
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This option is not correct
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Option 2 :
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[tex]\sf \bigg( a = \dfrac{W - 4b}{7} \bigg) \neq \bigg( a = \dfrac{W}{7} - 4b \bigg) [/tex]
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This option is not correct
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Option 3 :
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[tex]\sf \bigg( a = \dfrac{W - 4b}{7} \bigg) = \bigg( a = \dfrac{W - 4b}{7}\bigg) [/tex]
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This option is correct
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Option 4 :
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[tex]\sf \bigg( a = \dfrac{W - 4b}{7} \bigg) \neq \bigg( W = \dfrac{W}{7} - 28b \bigg) [/tex]
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This option is not correct
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[tex]\sf{\bold{\green{\underline{\underline{Answer}}}}} [/tex]
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- Correct answer = option C
