Three workers can do a job in 12 days. Two of the workers work twice as fast as the third. How long would it take one of the faster workers to do the job himself ?

The selling price of 8 shirts is equal to the purchase price of 10 shirts . What is the profit margin ?

What amount of money invested would earn interest of TK. 200 over 4 years at 10% simple interest rates ?

If An organization increases its staff salary by 25% . By what percent must it now decrease the salary to retu...

A person buys some pen and pencil. The pen costs TK. 7 each and pencils cost TK. 3 each. If he spends exactly...

A student scored 80 marks in his first test. After taking the third test, his average dropped from 82 to78 . W...

The price of rice in the year 1995 has increased by 10% forms that of the previous year . In 1996 the price ha...