The average mathematics marks of two Sections A and B of class IX 131 the annual examination is 74. The average marks of Section A is 77.5 and that of Section B is 70. The ratios of the number of students of Section A and B is:

4% of the selling price of an article is equal to 5% of its cost price. Again 20% of the selling price is Rs. 120 more than 22% of its cost price. The ratio of cost price & selling price is 

A wateh dealer pays 10% customs duty on a watch which costs Rs. 500 abroad. He de- sires to make a profit of 20% after giving a discount of 25% to the buyer. The marked price should be

A merchant marked the price of an article by incresing its pro- duction cost by 40% .Now he al- lows 20% discount and gets a profit of Rs. 48 after selling it. The production cost is 

The marked price of an article is 30% higher than the cost price. If a trader sells the articles allowing 10% discount to customer, then the gain per- cent will be

A dealer marks a washing machine for ₹7500, and allows a discount of 6% on it. Find the selling price 

If the cost price of 25 perts is equal to the selling price of 20 pens, then profit percent is

While selling a watch, a shop- keeper gives a discount of 5%. If he gives a discount of 7%, he earns ₹15 less as profit. The marked price of the watch is