Homework Help: Math

Posted by Tehila on Thursday, April 22, 2010 at 4:48pm.

Jasmine has an average of 95 on 15 quiz grades. If her teacher drops Jasmine’s lowest grade, a 72, which equation can beused to find n, Jasmine’s new quiz average?

A n = (95-72)/14
B n = [(95x15)-72]/14
C n = [(95x15)-72]/15
D n=[95(72-15)]/14

Math - Reiny, Thursday, April 22, 2010 at 5:55pm
total of 15 tests = 95x15
take 72 away --> 95x15 - 72
find average of 14 tests ---> (95x15-72)/14
Math - felix, Wednesday, March 9, 2011 at 6:35pm
there were 10 quizzes. the range was 38. the mean was 90. there was one outlier. few students got 100. Find the sum of the 10 quiz.

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