How much would I have to pay for a book which cost Tk 70 to produce, if the printing company sold it to a book seller at 20% profit and the book seller sold it to me at a profit of 25%?

A cake is divided into 18 pieces. If Rehana takes 1 / 3 of the cake and Rashed takes 1 /3 of the cake left, ho...

10 minutes after a plane leaves the airport, it is reported to be 40 miles away. What is the average speed in...

Of 30 applicants for a job, 14 had at least 4 years' experience, 18 had degrees, and 3 had less than 4 years'...

The total salary of X, Y and Z is Tk.90,000. X earns twice of what Z earns, and Y earns 1.5 times of what Z ea...

Mr. Khan's salary is Tk. 5000.00 and he gets 10% commission of his salary. If his salary increased by 10%, by...

A man's age is now 3 times his son's age. Eight years back, the man's age was 5 times his son's age. What is t...