Question

By selling 60 pens the shopkeeper lost amount of 20 pens, then find his loss percentage

Answer 1

Answer:

answer is here .

Step-by-step explanation:

LET “X” BE THE COST PRICE AND “Y” THE SALES PRICE

FIRST EQUATION 288Y = 288X - 12Y. (i.e) 300Y=288X. X=(300/288)Y=(25/24)Y

% OF LOSS = {(X-Y)/X}*100 = [{(25/24)Y-Y}/(25/24)Y}]*100 = 4