while working 7 hour a day , A alone can complete a piece of work in 6 days and B alone in 8 days . In what time would they complete it together , 8 hour a day?

P and O invested in a business. The profit earned was divided in the ratio 2 :3 . If P invested TK. 40000, the...

A B C subscribe TK. 50,000 for a business .A subscribes TK. 4000 more than B and B TK, 5000 more than C Out of...

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

The sum of the present ages of a father and his son is 60 years . Six years ago, father's age was five times t...

The sum of two numbers is 22 and the sum of their squares is 404, then the product of two numbers is -

In a class , the number of girls is 20% more than that of boys. The strength of the class is 66. If 4 more gir...