Sunday, August 31, 2008

GRE MATH PROBLEM OF THE DAY

The average (arithmetic mean) of x and y is 20. If z = 5, what is the average of x, y, and z?
A.
B.
10
C.
D.
15
E.

17 comments:

Anonymous said...

d

Ramya Pathi said...

d

Anonymous said...

d is correct :)

Anonymous said...

D is the correct answer

Unknown said...

i think d is correct

Anonymous said...

d

sravani said...

ans is d

ksuraj1 said...

c is anwser

Anonymous said...

i think the answer is d

Unknown said...

d...

Anonymous said...

d is the answer.

Unknown said...

sabh ko yahi lag raha hai toh D hei hoga!

Anonymous said...

D

danish said...

(x+y)/2 = 20 => x+y=40;
x+y+z = 40+5 = 45;

mean = (x+y+z)/3 = 45/3 = 15;

ANSWER = D

Anonymous said...

d is the correct

mini said...

the answer is dddddddd

Anonymous said...

x+y+z=45
45/3=15
C.15 is the correct answer