PDA

View Full Version : mean of 4 numbers is 85; largest is 97; find mean of other 3


prooftheory
10-12-2008, 04:44 PM
The mean of four integers is 85. If the largest is 97, what's the mean of the other three?

x is the lowest number
y is the second lowest number
z is the third lowest number

(x+y+z+97)/4 = 85
stapel
10-12-2008, 06:01 PM
The mean of four integers is 85. If the largest is 97, what's the mean of the other three?

(x+y+z+97)/4 = 85
Okay. Now solve. Then divide through by three to get the average.

Eliz.