of a wire is in black colour and half of the remaining is in white and rest 6 cm length is blue. What is the length of the wire ?

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  1. 24 cm
  2. 12 cm
  3. 16 cm
  4. 20 cm

Answer (Detailed Solution Below)

Option 3 : 16 cm
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TSPSC VRO: General Knowledge (Mock Test)
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Detailed Solution

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Given:

Fraction of the wire in black = 

Half of the remaining wire is white.

Rest of the wire (blue) = 6 cm

Formula used:

Let the total length of the wire be .

Black wire length = 

Remaining wire = 

White wire length = 

Blue wire length = 

Calculation:

Blue wire length = 6 cm

⇒ 

⇒ 

⇒ 

⇒ 

⇒ 

⇒ 

∴ The total length of the wire is 16 cm.

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