Which of the following is the next number in the series : 3 , 6 , 9 , 18 , 27 , 54 , 81,.....?

A 180 liter mixture of milk and water contains 20% water. How much milk, in liters, must be added to the mixtu...

Jenny's average on 4 exams is 80. Assuming she cannot earn more than 100 on any exam. What is the least she ca...

Samad was planning on depositing a certain amount of money each month into a bank. He then decided not to make...

A salesman usaally makes 45% profit on every TV he sells. During a sale, he reduced his margin of profit to 40...

Since 1999 , Roby has gained 2 kilograms of weight every year, In 2009 he was 25% heavier than in 1999 . How m...

The length of a rectangle is 6 cm more than the side of a square, and the width of the rectangle is 6 cm less...