Question

if sp of 9 apples is equal to the c.p of 15 apples . find profit or loss pecent

Answer 1

The ans is 40% profit.
Let the cp of one Apple=x
Therefore total cp=15x
Given, that sp of 9 Apple=cp of 15 Apple
Sp of 9 Apple=15x
Cp of 9 Apple=9x(from above)
Therefore profit=(sp-cp)/cp*100
(15x-9x)/15x*100=40% profit(+ve ans)

Answer 2

SP of 9 apples =CP of 15 apples=Rs 15.Cp of 1 apple =Rs15.CP of 1 apple=RS =1 SP of 9 apples =Rs9.So gain=9 - 6 =3.Now, gain percentage = 6/9multipy by 100=200/3 percentage