Question

by selling 190 pencils Sahil made a loss equal to the selling price of 10 pencils find his loss percent

Answer 1

let sp of 1 pencil = Rs.1
sp of 10 pencils = Rs.10= loss
sp of 190 pencils = Rs.190

sp = cp-loss
190=cp-10
cp=190-10=180

loss percent = cp × loss/100
= 180×10/100
=18 percent