RRB NTPC 2014 Paper

(1) Number of type A employees in the year 1998
$=\mathrm{}\frac{48640\times 22}{100}=10700.8$
Number of type C and type D employees in the year 1997
$=\mathrm{}\frac{42980\times \left(10+15\right)}{100}=10745$
Number of type D and type E employees in the year 1997
= $\frac{42980\times \left(27+9\right)}{100}=15472.8$
Number of type B and type C employees in the year 1997
= $\frac{42980\times \left(10+11\right)}{100}=9025.8$
Number of type A and type C employees in the year 1997
= $\frac{42980\times \left(22+11\right)}{100}=14183.4$
Therefore, the number of type C and type D employees in the year 1997 was approximately equal to the number of type A employees in the year 1998.