Homework Help: math

Posted by Kelly on Friday, September 7, 2012 at 4:12pm.

If planet I is 31.8 million miles from the sun than planet II, then planet III is 25.6 million miles father from the sun than planet I. When the total of the distances for these three planets from the sun is 200.2 million miles, how far away from the sun is planet II?
Planet II is__million miles from the sun.

math - PsyDAG, Saturday, September 8, 2012 at 11:26pm
x = Planet II, then Planet I = x+31.8 and Planet III = (x+31.8) + 25.6

x + (x+31.8) + (x+31.8) + 25.6 = 200.2

Solve for x.

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