A towns population changes from (a) 30,000 in 1970 to (b) 45,000 in 1994. Use this information to answer the following questions.

1. (b) is how many times greater than (a)?

2. What is the ratio of a to b?

3. What is the ratio of b to a?

4.What percent of a is b?

5. What percent of b is a?

6. What is the absolute difference between a and b?

7. What is the relative difference between a and b?