Posted by **Carolyn** on Saturday, April 27, 2013 at 9:36pm.

jim has grades of 84, 65, 76 on three tests. what grade must he obtain on the next test to have an average of exactly 80% for all four tests?

- math -
**Ms. Sue**, Saturday, April 27, 2013 at 9:57pm
84 + 65 + 76 = 225

0.8 * 400 = 320

320 - 225 = 95

- math -
**Bosnian**, Sunday, April 28, 2013 at 1:01am
( 84 + 65 + 76 + x ) / 4 = 80

84 + 65 + 76 + x = 4 * 80

225 + x = 320

x = 320 - 225 = 95

- math -
**David Kroell**, Monday, April 29, 2013 at 1:02pm
(65 + 84 + 76 + x ) / 4 = 80

(Balance the Equation)

225 + x = 320 [65 + 84 + 76 + x = 320]

(Balance the Equation)

x = 320 - 225 = 95

- algebra -
**johanne laroche**, Sunday, May 19, 2013 at 3:40pm
y=5x-3 y=-3x+13

- math -
**Anonymous**, Monday, January 6, 2014 at 2:04am
The sum of two consecutive numbers is 37. What are they

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