Hello there! You can solve this problem in less than a minute! divide zx/xy = z/y= 200/50 =4. Then multiply the result by zy -> zy*z/y=100*4=z*z=400. Therefore z=20. Now we simply substitute in the second and third equation, which gives us y=5 and x=10. Hence x+y+z=35.
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Hello there! You can solve this problem in less than a minute! divide zx/xy = z/y= 200/50 =4. Then multiply the result by zy -> zy*z/y=100*4=z*z=400. Therefore z=20. Now we simply substitute in the second and third equation, which gives us y=5 and x=10. Hence x+y+z=35.
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