If 600=200(1+4/r) then r=?

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If 

600=200(1+4r) then  r=?
May 26th, 2015

600 = 200 (1 + 4 / r)

First, divide both sides by 200.

3 = 1 + 4 / r
Now subtract 1.
2 = 4 / r
Multiply by r.
2r = 4
Finally divide by 2.
r = 2

May 26th, 2015

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May 26th, 2015
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May 26th, 2015
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