The average of 5 numbers is 13. if the average of 4 of these numbers is 10. then the fifth number is-------.
Answer: 25
Explanation
sum 4 numbers / 4 = 10 (sum 4 numbers is 40)
sum 5 numbers / 5 = 13 (sum 5 numbers is 65)
difference of the sums is 25
sum 4 numbers + 25 = 40 + 25 = 65
65/5 = 13
=the fifth number is 25
****
ND19-1-2023
This question appeared in
Past Papers (1 times)
IBA STS Past Papers, Syllabus, Jobs (1 times)
This question appeared in
Subjects (1 times)
MATHS MCQS (1 times)
Related MCQs
- The average of 10 numbers is calculated as 15. It is discovered later on that while calculating the average one number, namely 36, was wrongly read as 26. the correct average is ------
- The average of five numbers is 6.9. If one of the numbers is deleted, the average of the remaining numbers is 4.4. What is the value of the number deleted?
- The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last is 11.4, then find the sixth number?
- The sum of five numbers is 555. The average of first two numbers is 75 and the third number is 115. What is the average of last two numbers?
- The average of 6 numbers is 30. If the average of the first four is 25 and that of the last three is 35, the fourth number is?
- If the average of six numbers is 10 and each number is multiplied by 3, what is the new average?
- If the average of five numbers is 10 and one number 20 is removed, what is the new average?
- The average of 13 numbers is 60. The average of the first 7 of them is 57 and that of the last 7 is 61. Find the 8th number?
- The average of 50 numbers is 30. If two numbers 35 and 40 are discarded, then the average of the remaining numbers is nearly?
- The average of 5 numbers is 23. If the average of 4 of these numbers is 25, what is the fifth number?
