A factory used three raw materials A, B and C in its manufacturing process. The prices are as follows using 2010 as the base year

a simple aggregate price index for year 2020 is

105

The correct answer is Option (3) → 105

The simple aggregate price index is,

$P=\frac{∑P_n}{∑P_0}×100$

$=\frac{6+57+42}{5+65+30}×100=\frac{105}{100}×100$

$=105$