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| rev | Admin | (Created page with "'''Solution: A''' Using the basic formula: <math display="block"> \begin{aligned} & B V_2-B V_3=6.88 \\ & \left(87.5 a_{\overline{58} \mid}+C v^{58}\right)-\left(87.5 a_{\overline{57} \mid}+C v^{57}\right)=6.88 \\ & 39.0667-0.00625 C=6.88 \\ & C=5150 \end{aligned} </math> {{soacopyright | 2023 }}") | Nov 19'23 at 22:48 | +301 |