Answers

1. Step-by-step explanation:

   x:y=0.75:0.90

   Here,

   Dividing by the value of y=0.90,

   x:y=0.75/0.90:0.90/0.90

   =5/6:1

   Similarly,

   y:z=1/3:1/4

   Dividing by 1/3,we get,

   y:z=1:3/4

   Now,

   X:y:z=5/6:1:3/4

   Multiplying by both value of y,0.90×1/3=3/10

   x:y:z=5/6×3/10:1×3/10:3/4×3/10

   By solving this,

   x:y:z=1/4:3/10:9/40

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