1.

1). 5% loss2). 5% gain3). 10% loss4). 10% gain

Answer»

Cost price of 10 kg of rice = Rs. 400 × 10 = Rs. 4000

Cost price of 5 kg of rice = Rs. 2000 and the cost price of the REMAINING 5 kg of rice = Rs. 2000

Also given that trader got 20% loss for half of the quantity

We know that loss% = (CP - SP)/CP × 100

⇒ 20 = (2000 - SP)/2000 × 100

⇒ 200000 - 40000 = 100SP

⇒ SP = Rs. 1600

∴ Loss for first half = 2000 - 1600 = Rs. 400

Also given that profit for SECOND half is 10%

⇒ 10 = (SP - 2000)/2000 × 100

⇒ 100SP = 20000 + 200000

⇒ SP = 2200

∴ Profit for second half = 2200 - 2000 = Rs. 200

∴ Net there is a loss of Rs. 200

Final loss % = (net loss/total cost price × 100) = 200/4000 × 100 = 5%



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