By selling an article for Rs. 100 , one gains Rs. 10. Then , the gain percent is :

The selling price of 12 articles is equal to the cost price of 15 articles. The gain percent is:

An umbrella marked at Rs.80 is sold for Rs.68. The rate of discount is:

A man buys 10 articles for Rs.8 and sells them at the rate of Rs.1.25 per article. His gain percent is:

A fruit seller buys lemons at 2 for a rupee and sells them at 5 for three rupees. His gain per cent is:

On selling an article for Rs. 240 , a  trader loses 4%. In order to gain 10%, he must sell that article for :

A loss of 5% was suffered by selling a plot for Rs. 4,085. The cost price for the plot was:

A sold a watch at a gain of 5% to B and B sold it to C at a gain of 4%. If C paid Rs. 91 for it , then A paid:

By selling a table for Rs. 30 instead of Rs. 40, 5% more is lost. The cost of the table is :

Toffees are bought at the rate of 8 for a rupee. To gain 60%, they must be sold at: