A class of 25 students took an English test. 15 students had an average score of 80. The other students had an average score of 60. What is the average score of the whole class?

The correct option is 72.

To find the average score of the whole class, we need to calculate the total score of all students combined and divide it by the total number of students in the class.

Step 1: Identify the given data
Total number of students in the class = 25
Number of students in the first group = 15
Average score of the first group = 80
Number of remaining students in the second group = 25 - 15 = 10
Average score of the second group = 60

Step 2: Calculate the total score of the first group
Total score of first group = Number of students × Average score

$\text{Total score of 15 students}=15\times 80=1200$

Step 3: Calculate the total score of the second group
Total score of second group = Number of students × Average score

$\text{Total score of 10 students}=10\times 60=600$

Step 4: Calculate the combined total score of all 25 students

$\text{Total class score}=1200+600=1800$

Step 5: Calculate the average score of the whole class

$\text{Class Average}=\frac{1800}{25}=72$

Thus, the average score of the whole class is 72.