A) 10
B) 12
C) 15
D) 18
Correct Answer: C
Solution :
\[\because \] \[\frac{{{M}_{1}}{{D}_{1}}{{H}_{1}}}{{{W}_{1}}}=\frac{{{M}_{2}}{{D}_{2}}{{H}_{2}}}{{{W}_{2}}}\] \[\therefore \] \[\frac{18\times 5\times 1}{144}=\frac{m\times 8}{1920}\] \[\Rightarrow \] \[m=\frac{1920\times 18\times 5}{8\times 1440}=15\]
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