Average Questions

3 numbers whose average is 112, the first number is 1/6th the sum of other 2. What is the first number?

The average of 8 consecutive natural numbers is 38.5. What is the largest of these 8 numbers?

In a class of 56 students there are 28 girls. The average weight of these girls is 46 kg and average weight of the full class is 51 kgs. What is the average weight of the boys of the class?

The average cost of 5 items in a shopping list is Rs 650. If one more item whose cost is Rs 1400 is added to the list what will be the new average (in Rs)?

One diagonal of a rhombus is half the other. If the length of the side of the rhombus is 20 cm, what is the area of the rhombus?

The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The 15th observation is

The value of (2+32-3-342) is

In an exam, the avarage marks obtained by John in English, Maths, Hindi and Drawing were 50. His average marks in Maths, Science, Social Studies and Craft were 70. If the average marks in all seven subjects is 58, his score in maths was