Question

If a population of 50 paramecia present in a pool increases to 150 after an hour, what would be the growth rate of population?

• A. 50 per hour
• B. 200 per hour
• C. 5 per hour
• D. 100 per hour

Answer 1

The correct option is D

100 per hour

When a population of 50 paramecia increases to 150, the population has grown by 100. Since the increase was in a period of 1 hour the growth rate is 100 per hour.