Final answer:
To calculate the new number of dragons after a 15% increase from 300, multiply 300 by 0.15 to find the increase (45), then add it to the original number (300) to get the new total (345).
Step-by-step explanation:
The question asks us to calculate the new number of dragons in Westeros after an increase of 15% from the previous year. Starting with 300 dragons last year, to find the new number, we calculate 15% of 300 and add it to the original 300.
First, find 15% of 300:
- Convert 15% to a decimal by dividing by 100: 15 ÷ 100 = 0.15.
- Multiply the decimal by the original number of dragons: 0.15 × 300 = 45.
Add the increase to the original number:
Therefore, the new number of dragons in Westeros this year is 345.