Question

if CP of 13 pencils is equal to SP of 14 pencils find the profit or loss percent

Answer 1

Sp of 14 pencils profited by 1 pencil

Answer 2

let cp of 1 prncil be Rs. 1
cp of 14 pencil = Rs.14
Now,
sp of 14 pencil = cp of 13 pencil
=Rs. 13

loss = cp-sp
= 14-13
=Rs. 1

loss % = 1÷14×100%
= 100÷14
= 7.14% approx