Question

A shopkeeper sells an article at Rs 640, thus suffering a loss of
20%. Find the C.P. of the article
with working

Answer 1

I hope you understood that one

Answer 2

Answer:

SP = Rs 640

LOSS = 20%

LOSS = CP - SP

20% = CP - 640

CP = - 640 - 20 / 100

CP = 128

cost price = Rs 128

hope it helps you......