Question

A trader sells 20 kg of sugar at rs. 400 and agrees to the request of a customer to give him a discount of 20%. But being a dishonest trader he uses a spurious weight which is less by 4% per kg of weight. The effective discount that the customer then gets,

Answer 1

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A trader sells 20 kg of sugar at Rs. 400. A customer asks 20% discount and he agrees to it but instead of 1 kg he gives 4% less sugar. what is the effective discount that the customer gets ?
16 %
16.66 %
15.5 %
19.6 %


Correct Option: B
Let the MP = Re. 1 per kg then
Initially :
Weight = 100 kg
MP = Rs. 100
Rate = 1 Rs / kg.

Finally :
Weight = 96 kg
MP = Rs. 96
Rate = 80 / SP = 80/96

Effective discount = 1- 80 / 96 = 16 / 96
% discount = [(16 / 96) ]x 100 = 16.66 %