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March 1, 2015

March 1, 2015

Posted by **jenn** on Monday, March 18, 2013 at 1:46pm.

- math - insufficient information -
**Ms. Sue**, Monday, March 18, 2013 at 1:53pmWe need to know the total points including those for the next test.

- math -
**Reiny**, Monday, March 18, 2013 at 2:00pmYour question is not quite complete.

How many tests gave you that 66.67 average ?

Suppose it was only one test, then you need x on the next so that

(x+66.67)/2 =70

x+66.67 = 140

x = 73.33

If your 66.67 was the average of 5 tests, then if x is your 6th test

(x + 5(66.67)/6 = 70

x + 333.35 = 420

x = 86.65

Can you see the problem with your question ?

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