A town's population is currently 30,000. If the population doubles every 45 years, what will the population be 90 years from now?

Step 1. Currently 30,000
Step 2. Doubles in 45 years that is 60,000
Step 3. In another 45 years if it doubles again it would be 120,000
Answer in 90 years the town population would be 120,000 people

The last one bc that's a calendar