Mr. X can do a job in 8 days and his son can do it in 12 days. How many days will it take to complete the job if they work togethsr?

A Company makes a profit of 6% on its first Tk. 10,000 of sales day and 5% on all sales in excess of Tk. 10,00...

The sales price of an item including the sales tax is Tk. 616. The tax rate is 10%. If the shopkeeper made a p...

In a store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains the sam...

The profit earned from selling item for Tk. 900 is double the loss incurred when the item is sold for Tk. 450....

In one year, the population of city increased by 20%. The next year, it decreased by 10%. What was the percent...

The ages of two persons differ by 16 years. 6 years ago, the elder one was 3 times as old as the younger one....