Question

if a shop keeper wants to give 20% discount on a toy, he has to sell it for Rs 300. If he sells it at Rs405 then his gain %is

Answer 1

If MRP =X

then
MRP -20%=300

X -x*20/100= 300

100x-20x=300*100

80x=30000

X =30000/80

X= 375

MRP =375

and he can't sell it at 405 which is above
the MRP
the question seems a little bit error