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

Options

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

Explanation

To calculate the growth rate of the Paramecium population, we can follow these steps:

### Step 1: Identify the Initial and Final Population
- The initial population (P0) of Paramecium is 50.
- The final population (P1) after one hour is 150.

### Step 2: Calculate the Change in Population
- The change in population (ΔP) can be calculated using the formula:
\[ ΔP = P1 - P0 \]
- Substituting the values:
\[ ΔP = 150 - 50 = 100 \]

### Step 3: Calculate the Growth Rate
- The growth rate (r) can be calculated using the formula:
\[ r = \frac{ΔP}{P0} \times 100 \]
- Substituting the values:
\[ r = \frac{100}{50} \times 100 = 200\% \]

### Step 4: Determine the Growth Rate per Hour
- Since the population increased from 50 to 150 in one hour, we can express the growth rate per hour:
- The growth rate is 200% per hour.

### Final Answer
The growth rate of the Paramecium population is **200% per hour**.

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