A) \[\frac{M}{40}\]
B) \[\frac{M}{10}\]
C) \[\frac{M}{20}\]
D) \[\frac{M}{5}\]
Correct Answer: A
Solution :
[a]\[MV={{M}_{1}}{{V}_{1}}+{{M}_{2}}{{V}_{2}}+{{M}_{3}}{{V}_{3}}\] |
or \[M\times 1000=1\times 5+\frac{1}{2}\times 20+\frac{1}{3}\times 30\] |
or \[M=\frac{1}{40}\] |
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