A) 316
B) 320
C) 325
D) 330
Correct Answer: A
Solution :
\[\frac{V\times 45}{100}+\frac{(800-V)20}{100}=\frac{800\,\times 29.875}{100}\] \[\frac{9V}{20}+160-\frac{V}{5}\,=239\] \[\frac{5V}{20}=79\Rightarrow \,V=316\,\]You need to login to perform this action.
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