36.) A discount dealer professes to sell his goods at cost price but uses a weight of 960 gms for a kg weight. Find his gain %?
A. 14% B. 17%
C. 23% D. None of these
Answer: Option D
Explanation:
Gain% = [(error *100) / (true value-error)]%
= [(40 * 100) / (1000 - 40)]% = 25/6%
