If x is a positive number less than 10, is z gater than the average of x and 10?
1) on the number line, z is closer to 10 than to x
2) z=5x
1) on the number line, z is closer to 10 than to x
2) z=5x
if x = 1 then avg of 1 & 10 = 5.5......I
if x = 3 then avg of 3 & 10 = 6.5.......II
a)
x = 1 & let z = 9 greater than avg ...... from I
x = 1 & let z = 2 smaller than avg ....... from I
Insuff
b)
if x = 1 then z = 5 smaller than avg ....... from I
if x = 3 then z = 15 greater than avg ........ from II
Insuff
Both together Insuff...
Ans E.
