Fraction and Simplification, Average and Mean

The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then the sixth number is -

30 pens and 75 pencils altogether were purchased for Tk. 510. If the average price of a pencil was Tk 2, what was the average price of a pen?

A cricketer has a certain average for 9 innings. In the 10^th innings he scores 100 runs, thus increasing his average by 8 runs. What is new average?

The average of 13 numbers is 68. If the average of the first 7 numbers is 63 and that of the last 7 numbers is 70, find the 7th number?

The average of 10 integers is 16. If the sum of 6 of them is 100. What is the average of other 4?

If the average (arithmetic mean) of x and y is 60 and the average (arithmetic mean) of y and z is 80. What is the value of (z - x)?

The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the two new students who joined the group?

The average of the three numbers x, y and z is 45, x is greater than the average of y and z by 9. The average of y and z is greater than y by 2. Then the difference of x and z is.

The average of x and y is 7, and z = 3x + 2. What is the average of y and z?

The average age of 16 members of a club is 22. If the minimum age requirement for being a member is 19 years. What is the possible maximum range of the ages?

What is the median of the modes in the dataset {-5, 4, 3, 7, 2, 1, 3, 4, 5,-1, 7, 8, -4, 2, 6}?

Consider that w + x = - 4, x + y = 25 and y + w = 15. Then the average of w, x, y is -

The average age of 12 children is 15 years. If another child comes, the average age comes to 13. What is the age of the new child?

The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is :

1/4, 1/2, 3/4 এর গড় কোনটি?

Which of the following is the average of first five prime numbers?

The average of the two-digit numbers which remain the same when the digits interchange their positions is-

The average of eight numbers is 14. The average of six of these numbers is 16. The average of the remaining two numbers is –

Arib's Toyota Cross averages 25 km/liter inside city and 40 km/liter on highway. Yesterday, he drove to his Gulshan office from the factory which is 105 km away. If the Google Maps showed that he drove 25 km of this distance inside Dhaka, what was his average mileage?

The average of 5 quantities is 6. The average of 3 of them is 8. What is the average of the remaining two numbers?