If 80 % of a number added to 80 gives the result as the number itself, then the number is: 

Two pipes P and Q can fill a cistern in 36 and 48 minutes respectively. Both pipes are opened together, after how many minutes should Q be turned off,so that the cistern be fill in 24 minutes?

If 15th of February 1789 is Friday what will be the day of 15th of February 1790? 

By selling a table for Rs. 350 instead of Rs. 400, loss percent increases by 5%. The cost price of table is : 

A sum of Rs. 6400 amounts to Rs. 6724 at 10% p.a. compounded quarterly. Find the time period.

Mohan, a shopkeeper, bought a shirt of list price ₹225 at a discount of 20%. If he wants a profit of 30% then he should sell the shirt for:

The average age of x and y is 18 years. If z is equal to 9 years the average of x, y and z is -