Rashid can do a piece of work in 8 days, which Tipu can finish in 12 days. If they work at it on alternate days with Rashid beginning, in how many days, the work will be finished?

Two equal glasses are respectively one-third and one-fourth full of milk. they are then filled up with water a...

The ratio between two numbers is 3:4 and their least common multiple is 180. What is the first number?

The distance between two stations, Dhaka and Chittagong is 450 km. A train starts at 5 pm from Dhaka and moves...

The simple interest on a sum of money will be Tk. 600 after 10 years. If the principal is trebled after 5 year...

Which one of the following is the next number in the series : 7, 7, 14, 42, 168-----?

12 year old Manick is three times as old as his brother Rahul. How old will Manick be when he is twice as old...