Three individuals contributed Tk. 8000 each toward the purchase of a computer. If they bought the computer on sale for Tk. 19500 plus 10% sales tax, how much money should be refunded to each individual ?

A 10% monthly salary increase resulted in a Tk. 9000 per year increase in salary for an employee. What was his...

when a certain number is divided by 7, the remainder is 0. if the remainder is not 0 when the number is divide...

A mixture of 20 sprit and water contains 10% water. How much water must be added to this mixture to raise the...

How much interest will Tk. 1000 earn in one year at an annual interest rate of 20% if interest rate is compoun...

If x and y are consecutive positive integers which of the following must be an even integer?

A gardrn of 100 m length and 60 m width has a walkway of 2 m width hon every side. what is the area of the are...