A: 80.5 / 100 * 250 = 199 pigeons returned to the laboratory. 80.5 / 100 * 25 = 173 pigeons returned to the laboratory. 80.5 / 100 * 199 pigeons = 81.25 percent of the total number of pigeons returned to the laboratory. The answer is (E).
Answer the following multiple choice question with options (a), (b), (c), (d), (e).
Q: John found that the average of 15 numbers is 40. If 10 is added to each number then the mean of the numbers is? Answer Choices: (a) 50 (b) 45 (c) 65 (d) 78 (e) 64 
A: The answer is (a). 

Answer the following multiple choice question with options (a), (b), (c), (d), (e).
Q: If a / b = 3/4 and 8a + 5b = 22,then find the value of a. Answer Choices: (a) 1/2 (b) 3/2 (c) 5/2 (d) 4/2 (e) 7/2 
A: The answer is (b). 

Answer the following multiple choice question with options (a), (b), (c), (d), (e).
Q: A person is traveling at 20 km/hr and reached his destiny in 2.5 hr then find the distance? Answer Choices: (a) 53 km (b) 55 km (c) 52 km (d) 60 km (e) 50 km 
A: The answer is (e). 

Answer the following multiple choice question with options (a), (b), (c), (d), (e).
Q: How many keystrokes are needed to type the numbers from 1 to 500? Answer Choices: (a) 1156 (b) 1392 (c) 1480 (d) 1562 (e) 1788 
A: The answer is (b).

Answer the following multiple choice question with options (a), (b), (c), (d), (e).
In an animal behavior experiment, 25 tagged white pigeons and 250 tagged gray pigeons were released from a laboratory. Within one week, 88 percent of the white pigeons and 80.5 percent of the gray pigeons had returned to the laboratory. What percent of the total number of pigeons returned to the laboratory? Answer Choices: A)80.5 B)82 C)81.5 D)85 E)81.25