Question

please please answer with explain quickly​

Answer 1

Answer:

50%

Step-by-step explanation:

Let the cp of one book be x

And the sp of one book be y

cp of 12 books = sp of 8 books

12x = 8y

3x = 2y

Gain % = ( p/cp )*100

=[ (sp-cp)/cp ]*100

= [(y-x)/x ]*100

= [(3x/2 - x)/x]*100

= 0.5*100

= 50%