ANSWER TO QUESTION # 6:

8/7-th of Rs. 35 equals Rs. 40, the regular selling price of the first frock and 7/6-th of Rs. 30 equals Rs. 35. the regular selling price of the second frock. Now, if the first frock usually sells for Rs. 40 and is sold for Rs. 35 on the reduced price, then I save Rs. 5. This gives me a gain on the cost the percentage of 5/35-eth which equals 1/7-th and that is a little more than 14.28.

The second frock usually sells for Rs. 35, which on the reduced price costs me Rs. 30. Again 1 save Rs. 5 which equals 5/30-eth or 1/6-th that amounts to, in percentage, a gain of little more than 16.66. The difference between the first frock and the second in terms of percentage gained is a little more, than 2.38. Hence, the second frock is a better buy.