College Applications and Entrance Requirements
Math and Arithmetic
IQ

When a total of 50 juniors and seniors were given a test The 35 juniors averaged a 80 on the test and the 15 seniors averaged a 70 What was the average score for all 50 students who took the test?

Top Answer
User Avatar
Wiki User
March 06, 2010 9:57PM

Total scores of the 35 juniors = 35 x 80 = 2800

Total scores of the 15 seniors = 15 x 70 = 1050

Combined total score = 2800 + 1050 = 3850

Average or arithmetic mean of the set of 50 students = 3850 ÷ 50 = 77.