The height of a box is 10cm, its upper and lower lids are square in shape. If the total surface area of the box is 250 cm^2, the length of its side is :

The price of a mobile set Tk. 4200, which includes 20% profit mark up. What is the cost of the mobile set ?

Mr. Bakhtiar works in the procurement department of a library. Under a new purchase policy, he increased the t...

It takes 10 days for 4 boys to complete a piece of work. The same work can be completed by 7 girls in 10 days....

A bus travelling at a speed of 5 km/hour, takes 3 hours to complete a distance. If it takes 4 hours to complet...

A mixture contains 2/5 of element A and 3/5 of element B. When 5ml of A is added to the mixture, the proportio...

The breadth of a rectangular field is 5m. Its length is thrice the breadth. What is the total length of facing...