1.

If (10x + 5) : (42x + 8) is the triplicate ratio for 5 : 8, find x31. 1,0002. 1,3313. 1,7284. 2,197

Answer» Correct Answer - Option 3 : 1,728

Given : 

(10x + 5) : (42x + 8) = 5 : 8 

Concept used :

x: y = a : b 

Triplicate ratio for a : b will be 

x : y = a3 : b3 

Calculations :

(10x + 5) : (42x + 8) = 53 : 83 (triplicate ratio for 5 : 8)

⇒ (10x + 5) : (42x + 8) = 125 : 512 

⇒ x = 12 

⇒ (x)3 = 123

⇒ 1728 

∴ the value of x will be 1728

 

 

 



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