In his pocket, a boy has 3 red marbles, 4 blue marbles, and 4 green marbles. How many will he have to take out of his pocket to ensure that he has taken out at least one of each color?

The average daily income of Mr. A and Mr. B is Tk. 350, of Mr. B and Mr. C is Tk. 365, and of Mr. A and Mr. C...

A retailer buys a Panjabi and a Fatua jointly at Tk. 500. If he sells the Fatua at 10% profit and the Panjabi...

A container full of water weighs 18.5 kg. If one-fourth of the container is full of water, it weighs 6.5 kg. W...

An employer pays 3 workers X, Y and Z a total of Tk. 610 a week. X is paid 125% of the amount of Y is paid and...

A manufacturer of jam wants to make a profit of Tk. 0.65 each to make first 100 jars of jams and Tk. 0.55 to m...

A man is running at a speed of 8 km per hour for a distance of 5200 metres. How many minutes would it take him...