Manoj bought two T. V. for Rs.2,280. He sold one at a loss of 20 percent and other at a profit of 10 percent. If each T.V was sold for the same price, then what is the cost price of the T.V which was sold at loss?

Rs.1,320

Loss % = 20% =  \(\frac{1}{5}\)

Profit % = 10% =  \(\frac{1}{10}\)

           CP            SP

1st      10             11

2nd     5               4

Given SP is equal so make SP equal

           CP              SP

1st      10             11× 4

2nd     5               4)× 11

           CP              SP

1st       40             44

2nd      55             44

     ————————————

           95             88

95x = 2,280

55x = 1320