SSC Government Jobs Exams Numerical Ability Averages

The average of 6 numbers is 8. What is the 7th number, so that the average becomes 10?

Read Solution (Total 2)

7th no is 22
11 years agoHelpfull: Yes(1) No(1)

7*10=6*8+X0-48=X
X=22
7
5 years agoHelpfull: Yes(0) No(0)

SSC Other Question

The average age of 30 kids is 9 years. If the teacher's age is included, the average age becomes 10 years. What is the teacher's age? Five years ago, the average of Raja and Rani's ages was 20 yrs. Now the average age of Raja, Rani and Rama is 30 yrs. What will be Rama's age 10 yrs hence?