Comparing Quant...

In January the price of a certain item was $$\$120$$. In February the price increased by $$10$$ percent. During a sale in March, the February price was discounted by $$10$$ percent. What was the price of the item during the sale in March?

Mr. Ambani purchased a car of $$3,00,000$$ and a bike for his son for $$1,00,000$$. He sold the car at a profit of $$10$$% and bike at a loss of $$20$$%. What is the net gain or loss?

A barrel of crude oil is extracted from shale at a cost of $$\$51$$, and then transported to and from the refinery at a cost of $$\$6$$ each direction. Oil is processed three times at the refinery plant, at a cost of $$\$9$$ each time. What is the profit, in dollars per barrel, if one barrel is sold for $$\$93$$? (Profit is equal to revenue minus expenses.)

If an article is sold at $$8\%$$ profit instead of $$8\%$$ loss, it would have brought Rs. $$12$$ more, what is the cost price of the article?

If a $ $$12,000$$ car loses $$10$$% of its value every year, what is the worth after $$3$$ years?

In a certain store, the profit is $$320$$% of the cost. If the cost increases by $$25$$% but the selling price remains constant, approximately what percentage of the selling price is the profit?

By selling an article what is the profit percent gained?
I. $$5\%$$ discount is given on list price.
II. If the discount is not given, $$20\%$$ profit is gained.
III. The cost price of the articles is $$\text{Rs. } 5000$$.

A trader marks $$10\%$$ higher than the cost price. He gives a discount of $$10\%$$ on the marked price. In this kind of sales how much percent does the trader gain or lose?

At the "$$30\%$$ off" book sale, a calculus book costs $$\$24$$. What is the original price of the book?

In the half yearly exam only $$70\%$$ of the students were passed. Out of these (passed in half yearly) only $$60\%$$ students are passed in annual exam. Out of those who did not pass the half yearly exam, $$80\%$$ passed in annual exam. What per cent of the students passed the annual exam?