On Saturday , 20 of the students in a class took a test and their average score was 80. On Tuesday, the other 5 students took the test, and their average score was 90 . what was the average for the entire class?

A container full of water weighs 20 kg . If one -fourth of the container is full of water. it weighs 8 kg . Wh...

A ferry can carry 24 buses or 36 cars at a time. If there are 9 cars on the ferry. how many buses can be loade...

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...