Correct option is C
Given:
Cost Price (C.P.) = ₹210
Discount = 5%
Gain = 90%
Formula Used:
S.P. = C.P. + Gain% of C.P.
S.P. = MRP × (1−100Discount)
Solution:
Gain = 90% of ₹210 = 10090×210 = ₹189
So, S.P. = ₹210 + ₹189 = ₹399
Let MRP be ₹x.
After 5% discount,
S.P. = x×10095 = ₹399
Now,
x = 95399×100=9539900 = ₹420
Alternate Solution:
CPMP=100−discount%100+profit%
210MP=100−5100+90 210MP=95190 ⟹MP=95190×210=₹420