1. The problem is to decrease 360 by 10 percent. 2. To decrease a number by a percentage, use the formula: $$\text{New value} = \text{Original value} - \left(\frac{\text{Percentage}}{100} \times \text{Original value}\right)$$ 3. Here, the original value is 360 and the percentage decrease is 10%. 4. Calculate the amount to decrease: $$\frac{10}{100} \times 360 = 36$$ 5. Subtract this amount from the original value: $$360 - 36 = 324$$ 6. Therefore, decreasing 360 by 10 percent gives 324.