A shop decreases prices by `50 %` and then sells at `50 %` discount. Do we get the goods for free there?

If a trader raises price by 20 % and then sells at 20 % discount, does he make a profit or suffer a loss? What percent?

A trader buys an electric fan for Rs. 2500 . He raises the price by 40 % and then offers 15 % discount. At what price does he sells it?

What if prices are raised by 25 % and then a discount of 20 % is given?

We have seen that If the length of a rectangle increases by 10 % and its breadth. decreases by 10 % then the area decreașes by 1 % . Instead of this, If the length decreases by 10 % and the breadth increases by 10 % how does the area change?

A reaction is 50 % complete in 2 hours and 75 % complete in 4 hours . What is the order of the reaction?

In a compound, there are 32 coconut trees and they form 50 % of the total number of trees. How many trees are there in all?

A manufacturer has three machine operators A,B and C. The first operator A produces 1% defective items,whereas the other two operator B and C produce 5% and 7% defective items respectively. A is on the job for 50% of the time,B is on the job 30 % of the time and C is on the job for 20% of the time. A defective item is produced,what is the probability that it was produced by A?

A shop offers an electric iron free with a fridge. They sell the fridge for Rs. 9000 and the iron for Rs. 1000 . If 20 % profit is to be got on this deal, what should be marked as the regular price of the fridge?