The mean height of Pat, Dex, Allan, Dan and Roy is 68 inches. If George is included in the group, the mean height becomes 67 inches. How tall is George?
2 answers
Show that 2Radical2an irrational number
Your last 4 or 5 questions have all been the same type.
I will do this one and let you do the others in the same way
The average for the 5 boys is 68, so their total heights is 5(68) = 340
Let George's height be x
(x + 340)/6 = 67
x+340 = 402
x = 62
I will do this one and let you do the others in the same way
The average for the 5 boys is 68, so their total heights is 5(68) = 340
Let George's height be x
(x + 340)/6 = 67
x+340 = 402
x = 62
1 answer