Question

which is a better option, a single discount of 40%, or
two successive discounts 20% and 20%. on an articles​

Answer 1

Answer:

A single discount of 40% on an article

Answer 2

Answer:

if a article cost 100x

then after 40% discount it would cost

100x-40x=60x

in case of 20% of 20%

100x become 100x-80x=80x then 80x become

80x-16x=64x

as 60x is smaller than 64x

so we would prefer 40% of