By selling a shirt for Rs 285 a shopkeeper loses 5%. At what price should he sell the shirt so as to gain 15%?
Let the CP of the shirt be Rs.x.
Its SP with 5% loss becomes Rs ( x-x*5/100)
=Rs19x/20
By the problem
19x/20=285
=>x=(285*20)/19=300
Hence the CP= Rs300.
So SP with 15% profit
=Rs(300+300*15/100)=Rs345