At what profit percent must an article be sold so that by selling at half that price, there may be a loss of 30%?
25%
30%
40%
42%
36%
Let SP =100 , New SP=100/2 =50 ,loss %= 30%
So CP = 100/(100-loss%) ×SP
100/70 ×50 =500/7
Profit = SP -CP =100 -500/2 =200/7
Profit % = 200/7/7/500 ×100 = 40% ans