Multiple choice

A dishonest shopkeeper professes to sell his clothes at the cost price, but he uses a false length scale of 85 cm for each metre. Find his gain percent.

  1. 17.65%

  2. 15%

  3. 16%

  4. 14.45%

  5. 14%

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A Correct answer
Explanation

To find the answer of this question, use this shortcut formula,

(100 + G)/(100 + X) = True length/False length 

(100 + G)/100 = 100/85 (since he sells at cost price, so x = 0) 

G = 17.65%

So, his required gain is 17.65%.