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Then
100
C = xSP

100 Loss %

Example 1: A farmer sold two bullocks for Rs.18000 each. On one he gained 20%
and on the other he lost 20%. Find his total loss or gain.

Solution:
Here we have selling prices.

20% profit implies: cost is 100% selling is 120%
20% loss implies: cost is 100% selling is 80%

gaining 20%: Selling price Rs.120, cost price Rs.100
Selling Rs.18000, cost (100 X 18000)/120 = Rs.15000

loss 20%: Selling price Rs.80, cost price Rs.100
Selling Rs.18000, cost (100 X 18000)/80 = Rs.22500

Total selling price = 2 x 18000 = 36000
Total cost price = 15000 + 22500 = 37500
Loss = 37500 - 36000 = Rs.1500.

Example 2: Maninder bought two horses at Rs.20000 each. He sold one
horse at 15% gain. But he had to sell the second horse at a loss. If he had
suffered a loss of Rs.1800 on the whole transaction, find the selling price of
the second horse.

Solution:
Cost of two horses at Rs.20000 = Rs. 40000
Sold both for (Cost - Loss) = 40000 - 1800 = Rs.38200

Profit on first horse 15% = 10% + 5% = 2000 + 1000 = Rs.3000
First horse sold for Rs.23000

So selling rice of second horse = 38200 - 23000 = Rs.15200

Example-3
Ahmed purchased a radio set for Rs.2700 and spent Rs.300 on its repairs. Then he
sold it to Karim at a gain of 25%. Karim sold it to Subramaniyam at a loss of 10%.
Find the C.P. for (i) Karim (ii) Subramaniyam.
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