If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work?

In a 729 liters mixture of milk and water, the ratio of milk to water is 7:2. to get a new mixture containing...

Kamal started a business investing Th 9000. After five months, Sammer joined with a capital profit of Tk. 6970...

The angle of elevation of a ladder leaning against a wall is 60" and the foot of the ladder is 4.6 m away from...

Father is aged three times more that his son Ronit. After 8 years, he would be two and a half tims of Ronit's...

An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when the c...

66 cubic centimeters of silver is drawn into a wire 1 mm in diameter. The length of the wire in meters will be...