Scan QR code or get instant email to install app

Skip to content
#
A set of 9 numbers {3, 3, 4, 5, 5, 5, 6, 7, 7} has a mean of 5. Another number is added to the set and the mean becomes 6. What number is added to the set?

### Related Information

Question:

A
15

explanation

The total sum of the 9 numbers is 9 × 5 = 45

The total sum of the 10 numbers is 10 × 6 = 60

45 + number added = 60.

Number added is 60 - 45 = 15.

Take more free practice tests for other GED topics with our ged online now!

Comments