the mighty shop keeper

Level pending

A shopkeeper sells 10 kg of sugar at Rs.150. A customer asks for 15% discount and the shopkeeper agrees to his demand, but instead of 1 kg, he gives only 960 gm. The approximate effective discount that the customer gets is.


The answer is 11.

Shivansh Mittal by shivansh mittal , 22, India

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1 solution

Shivansh Mittal
Jan 13, 2014
  • Cost of 1 kg of sugar =15,
  • FOR 1 kg the costumer wants =15 X 85/100,
  • But shopkeeper gives 960 gm,
  • For 960 gm=15 x 85/100,
  • For 1 kg =15 x 85/100 x 1000/960,
  • Let x be the effective discount,
  • Initially for 1000 gm =15,
  • x/100 x 15=15-(15 x 85/96),
  • x/100=1-85/96,
  • x=11.46 % which is approximately equal to 12%
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