In a school with 5 classes, each class has 2 students less than the previous class. How many students are there in the largest class if the total number of students at school is 140? Choose the correct choice
A) 28
B) 29
C) 30
D) 31
E) 32
Let x be the number of students in the largest class.   Then x + (x-2) + (x-4) + (x-6) + (x-8) = 140   5x -20 = 140   5x = 160   x = 32   The answer is 32.
<result>E</result>
In a school with 5 classes, each class has 2 students less than the previous class. How many students are there in the largest class if the total number of students at school is 140?