If goods are purchased for Rs.450 and one-third is sold at a loss of 10%, what percent of profit should be taken on the remainder so as to gain 20% on the whole transition?
35%
Or 1 : 2
We see that 20 – ( -10 )=20+10=30. As 2 is written in place of 30, there should be 15 in place of 1. Therefore, x – 20 + 15 = 35%