Posted by **Caitlyn** on Sunday, November 27, 2011 at 2:36pm.

Karen has an 86% average after 4 grades, what grade does she need to get in order to bringer average up to an 88%?

- Math -
**Caitlyn**, Sunday, November 27, 2011 at 2:38pm
I need a formula to solve the question.... If anyone has a clue I would love it

- Math -
**Jason**, Sunday, November 27, 2011 at 3:00pm
I think its ..

a+b+c+d/4=86

86x4=344

a+b+c+d=344

a+b+c+d+e=(88x5)

a+b+c+d+e=440

440-344=96

I THINK THE ANSWER IS 96

- Math -
**david**, Monday, November 28, 2011 at 6:46pm
explain how you can use multiplication to help you find 20 divide by 5

- Math -
**david**, Monday, November 28, 2011 at 6:51pm
explain how you can use multdivide5 iplication to help you find 20

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- Math -
**Jason**, Tuesday, November 29, 2011 at 5:10pm
20x .25

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