Question

a trader allow 10% discount and still nakes a profit of 20% on his goods if the profit he makes is rs 150 find the marked price of the goods

Answer 1

Given, 
Profit = 20%
Also Profit = Rs.150
Let the Price after discount = x
which implies-
20/100 * x = 150
x= Rs 750
Now discounted price is Rs.750
10% discount was given.
hence, 
90% = Rs 750
100%= 750/90 * 100 = Rs 834(approximately) 
Hence the marked price of the goods =Rs.834