Answer:
252
Step-by-step explanation:
When you decrease a number by 30 percent, you end up with 70% of the number.
70% of 300 = 0.7 × 300 = 210
When you increase a number by 20%, you end up with 120% of the number.
120% of 210 = 1.2 × 210 = 252
Answer: 252
