Question

a group of eight frogs is placed in a tank. one frog is green, four are yellow and black, and three are blue. what is the probability of randomly choosing a blue or green frog from the tank? a 12.5% b 33.0% c 37.5% d 50.0%

Explanation:

Step1: Count the number of blue and green frogs

There is 1 green frog and 3 blue frogs. So the number of favorable outcomes (blue or green) is \(1 + 3=4\).

Step2: Calculate the probability

The total number of frogs is 8. The probability formula is \(P=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}\). So \(P=\frac{4}{8}\).

Step3: Convert to percentage

\(\frac{4}{8}=0.5\), and \(0.5\times100\% = 50\%\)

Answer:

D. 50.0%