Question

A shopkeeper claims to sell his articles at a discount of 10%, but marks his articles by increasing the cost of each by 20%. His gain percent is:
(a) 6%
(b) 8%
(c) 10%
(d) 12%

Answer 1

let the cost price of article be rs 100 then 20 % of
it =rs 120
and now the discount is 10% of rs 120 that is 12
so gain = rs 8 then gain %= 8/100×100=8%