Given:
 Successive discounts (d and d ) offered by the shopkeeper on a sweater
 Profit % of the shopkeeper = 60%
To Find: Markup% on the sweater?
Approach:

 So, in order to know the MarkUp %, we need to know either the ratio or the values of Markup (the amount of markup) and the Cost Price. Since we are not given the dollar values of anything (like cost price, selling price, marked price, discount or profit), we will not be able to find the dollar values of MarkUp and Cost Price. So, we should try to find the ratio

 So, in order to find the ratio we need to find the ratio we need to fid the ratio
 We are given the discounts availed on the sweater. Using these discounts, we will be able to find the ratio of Marked Price and Selling Price of the sweater.
 Let’s assume the Marked Price to be x.
 So, Marked Price after applying discount d_{1} = x – d_{1} % of x
 Now, Marked Price after applying discount d^{}_{2} = (x – d1% of x) – d_{2} % of (x – d_{1} % of x)
So, the selling price of the sweater = (x – d_{1} % of x) – d_{2} % of (x – d_{1} % of x)  So,
We are also given the profit % on the sweater. Using this, we will be able to find the ratio of Selling Price and Cost Price of the
sweater
Selling Price = Cost Price + Profit
Also, we know that
Working out:
2. Calculating the Cost Price
a. Selling Price = 0.64x
b. Profit% = 60%
c. So, we can write 0.64x = CP + 60% of CP, which gives us CP = 0.4x
3. Calculating MarkUp%
a. Hence, the price of sweater was marked up by = x – 0.4x = 0.6x. So, using (1), the markup5 can be given by
Answer : C