Question

Mr. Y bought a piano and sold it at a loss of 20% . if he had bought it for 10% less and sold it at rs 999 more than the previous selling price , he would have made a profit of 30% . Find the original cost price of the piano.​

Answer 1

Step-by-step explanation:

let cp be x

sp 1 = (100-10/100)

sp 2 at 20% loss = (100-20/100)*x

=80x/100=4x/5

sp2 at gain 30% = (100+30/100)*4x/5

=26x/25-9x/10 = 77

x= 550

hope it helps