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If 3x = 4y = 5z then x:y:z is
  1. 3:4:5
  2. 5:4:3
  3. 20:15:12
  4. None of these
Explanation

Let  3x = 4y  = 5z =k

x = k/3 ,y =k/4 ,z =k/5

x : y : z = k/3 : k/4 : k/5

x : y : z =  20 :15 :12

Sh1-9-2023

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