Final answer:
The percentage rise in the price of rice is 20%.
Step-by-step explanation:
To find the percentage rise in the price of rice, we need to calculate the percentage change in price. The formula to calculate percentage change is:
(new value - old value) / old value * 100
Using this formula, we can calculate the percentage rise as follows:
(12 - 10) / 10 * 100 = 20%