Let's solve the problem step by step:

1. Last year's salary was $100,000.
2. This year's salary increased by 15%, so this year's salary is: $\text{This year's salary} = 100,000 \times (1 + 0.15) = 100,000 \times 1.15 = 115,000$
3. Next year, the salary will be 30% higher than this year's salary, so the next year's salary is: $\text{Next year's salary} = 115,000 \times (1 + 0.30) = 115,000 \times 1.30 = 149,500$

Thus, the salary next year will be $149,500.

Would you like further details on the calculation, or have any other questions?

Here are 5 related questions for practice:

1. What would the salary be after a 20% increase next year?
2. If the salary increased by 10% instead of 15% this year, what would next year’s salary be?
3. What would the salary be in two years if it continues to increase by 15% each year?
4. If the salary decreased by 5% next year instead of increasing by 30%, what would it be?
5. What is the overall percentage increase in salary from last year to next year?

Tip: When calculating successive percentage increases, always apply each increase one at a time, multiplying the new salary by the respective percentage.