Based on the cost price of these clothes, it is 1.

The pricing is/kloc-0 /× (1+40%) =1.4.

The final 50% discount price 10% = 1.4×50%=0.7.

actual profit

=( 1.4×90%+0.7× 10%- 1)÷ 1

=( 1.26+0.07- 1)÷ 1

=0.33

=33%