The sales price of an item including the sales tax is Tk. 616. The tax rate is 10%. If the shopkeeper made a profit of 12%, What was cost price of the item in Tk.?

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....

If a number exceeds another number by 13 and the larger number is 1.5 times the smaller number, then the small...

The effective speed of a boat travelling downstream is 20 kmph, whereas it is 10 kmph upstream. What is the sp...