Question

Mohan bought 100 erasers for rs 250. he was not very good at calculation and made a mistake in fixing his selling price. when he sold his erasers, he incurred a total loss equal to the selling price of 25 erasers. find his loss percent.
(Pls solve step by step)

Answer 1

Here CP of 100 erasers = Rs. 250/-  
Let SP of 100 erasers = Rs. 4X
then SPof 25 erasers = Rs4X * 25/ 100 = X
Given Loss = SPof 25 erasers = X 
or CP - SP =X
or 100 - 4X = X 
or 5X= 100
or X= 20 
Therefore SP = 4X = 20 * 4 = Rs. 80/- 
Loss = X = Rs. 20/-
Loss%ge= Loss/ CP * 100% = 20/ 100 * 100% = 20% 
In the given case loss percent is 20% (Answer) 

Answer 2

what he will do with 100 eraser