This year, 660 students are studying Chinese. Last year, there were 600 students taking Chinese classes. What was the percentage increase in the number of students who take Chinese.

To calculate the percentage increase in the number of students studying Chinese from last year to this year, follow these steps:

1. **Determine the increase in the number of students**:
   \[
   \text{Increase} = \text{This year's students} - \text{Last year's students}
   \]
   \[
   \text{Increase} = 660 - 600 = 60 \, \text{students}
   \]

2. **Calculate the percentage increase**:
   \[
   \text{Percentage Increase} = \left(\frac{\text{Increase}}{\text{Last year's students}}\right) \times 100
   \]
   \[
   \text{Percentage Increase} = \left(\frac{60}{600}\right) \times 100 = 0.1 \times 100 = 10\%
   \]

So, the percentage increase in the number of students studying Chinese is **10%**.

Would you like more details or have any questions? Here are some related questions you might consider:

1. If the number of students increases by 10% again next year, how many students will be studying Chinese?
2. What would the percentage increase be if there were 700 students this year?
3. If the number of students had only increased by 30 students, what would the percentage increase have been?
4. How many students would need to be enrolled next year for a 15% increase?
5. What was the percentage increase if the number of students was 500 two years ago?
6. If 5% of the students dropped out, how many students would be left?
7. How many students would there be if the increase had been 20% instead?
8. What would be the percentage decrease if the number of students dropped to 550 next year?

**Tip:** When calculating percentage increases or decreases, always use the initial value as the base for your calculations.

Learn how to calculate the percentage increase in the number of students studying Chinese this year compared to last year. Step-by-step solution provided using arithmetic operations. Suitable for Grades 6-8.

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