Mr.Fox's fourth grade class of 20 students had an average of 72% on their last test. However, Rose's mark of 76% had been incorrectly recorded as 56 %. What was the correct class average for the test?

Question

A) 82% B) 80% C)73% D) 62%

Answer 1

20*.72 = 14.4
(144+(.76-.56))/20 = .73
so (C)