On Thursday, 20 Of The 25 Students In A Chemistry Class Took A Test, And Their Average (arithmetic Mean) Was 80. On Friday, The Other 5 Students Took The Test, And Their Average (arithmetic Mean) Was 90. What Was The Average For The Entire Class?
Madhumita
4 Years Ago
On Thursday, 20 of the 25 students in a chemistry class took a test, and their average (arithmetic mean) was 80. On Friday, the other 5 students took the test, and their average (arithmetic mean) was 90. What was the average for the entire class?
(A) 82
(B) 84
(C) 85
(D) 88
asked Jun 15 12:00:00 AM
Madhumita
Q: 339
A: 0
