A mobile plan's daily data was cut from 2 GB to 1.5 GB, but its price did not change. By what percentage did the price per GB rise?

Explanation

1. 01

   Let the price be ₹P. Old price per GB = $\frac{P}{2}$; new = $\frac{P}{1.5}$.

2. 02

   Ratio new ÷ old = $\frac{2}{1.5} = \frac{4}{3}$.

3. 03

   So the price per GB rose by $\frac{1}{3}$, i.e. $33\frac{1}{3}\%$.