1.  What was the approximate percentage increase in the sales of 55AH batteries in 1998 compared to that in 1992?

A. 28%
B. 31%
C. 33%
D. 34%
E. 37%

Answer: Option D

Explanation:

Required percentage
= [ (145 - 108) x 100 ] %
108
= 34.26%
~= 34%.