A) 50
B) 52
C) 56
D) 60
Correct Answer: D
Solution :
Men Days x 18 \[{{R}_{2}}%\] 20 \[{{n}_{2}}\] \[{{R}_{k}}%\] \[{{n}_{1}}+{{n}_{2}}+.....{{n}_{k}}\] \[V={{V}_{0}}{{\left( 1-\frac{{{R}_{1}}}{100} \right)}^{{{n}_{1}}}}.{{\left( 1-\frac{{{R}_{2}}}{100} \right)}^{{{n}_{2}}}}....{{\left( 1-\frac{{{R}_{k}}}{100} \right)}^{{{n}_{k}}}}\]
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