Find the single discount (as percent) equivalent to successive discounts of :

(i) 80% and 80%

(ii) 60% and 60%

(iii) 60% and 80%

Rohit buys an article marked at ₹ 600 and pays tax = 10%. The total amount paid by him is :

1. ₹ 540

2. ₹ 660

3. ₹ 590

4. ₹ 610

The selling price of an article is ₹ 440 inclusive of tax at the rate of 10%, the marked price of the article is :

1. ₹ 484

2. ₹ 400

3. ₹ 450

4. ₹ 430

Some goods/services cost ₹ 800 and rate of GST on it is 12%. If the sales are intra-state, the total amount of bill is :

1. ₹ 896

2. ₹ 704

3. ₹ 812

4. ₹ 788