Mahesh sold \( \frac{3}{4} \) of his stock at a gain of 20% and the remaining stock at a gain of 15%. Find the total gain percentage (approximate).
19%
17%
20%
15%
A. 19%
If \( \frac{154}{0.154} \)= \( \frac{15.4}{x} \), then find the value of x.
15.4
0.0154
1.54
154
B. 0.0154