The rod

The rod is painted in four colors. 55% of the bar is painted in blue, green 0.2 of rod, 1/8 is brown and the remaining 45 cm of white. How long is rod?

Correct result:

x =  360 cm

Solution:


x-55/100x - 0.2 x - 1/8x = 45

x-55/100•x - 0.2•x - 1/8•x = 45

25x = 9000

x = 360

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