In 1920, the Non‑Cooperation Movement had 1 300 000 volunteers. By 1921, the number rose to 2 200 000. What is the percentage increase in volunteers from 1920 to 1921?

Step-by-step solution

1. Step 1: Find the increase in volunteers: $2,200,000-1,300,000=900,000$ volunteers.
2. Step 2: Divide the increase by the 1920 number to get the proportion: $\frac{900,000}{1,300,000}=0.6923077$.
3. Step 3: Multiply by 100 to convert to a percentage: $0.6923077\times 100=69.23$.
4. Step 4: Round to two decimal places.

Concept tested: Calculating percentage increase

Published 16 October 2026 · How this solution was prepared and checked