Construct index number of price from the following date by using Dorbish-Bowley's method:

125.1

The correct answer is Option (3) → 125.1

Dorbish-Bowley's Method:

$P_{01} = \frac{\frac{\sum p_1q_0}{\sum p_0q_0} + \frac{\sum p_1q_1}{\sum p_0q_1}}{2} \times 100$

$= \frac{\frac{200}{160} + \frac{134}{107}}{2} \times 100 = \frac{1.25 + 1.252}{2} \times 100$

$\frac{2.502}{2} \times 100= 125.1$