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Sticky Note
If x : y = 7 : 8 and y : z = 5 : 6, then x : z = ?
  1. 35 : 48
  2. 7 : 6
  3. 6 : 7
  4. 48 : 35
Explanation

x:y = 7:8 → multiply both by 5 ⇒ x:y = 35:40  

y:z = 5:6 → multiply both by 8 ⇒ y:z = 40:48  

So x:z = 35:48


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