Question

the selling price of 10 pencils is equl to th cost price of 11 pencils. what is th profit percent?

Answer 1

Hey!

Let C.P of one pencil be 100
Then,C.P of 11 pencil = 100 x 11 = Rs. 1100
ATQ,
S.P of 10 pencil = C.P of 11 pencil
S.P of 10 pencil = Rs.1100
S.P of pencil = Rs. 1100/10
S.P of Pencil = Rs. 110

Now,

Profit %= S.P - C.P
             = 110 - 100
             = 10%