If p1 = Price in the current year, q1 = quantity in the current year, po = price in the base year, q0 = quantity in the
Let's break it down: we verify ∑_p_1q_0∑_p_0q_0 by full calculation: use standard identity, substitute, simplify step by step to reach ∑_p_1q_0∑_p_0q_0.
Ref: NCERT Mathematics Class XI and XII
