Woozler wrote:If m and r are two numbers on a number scale, what is the value of r?
(1) the distance between 0 and r is 3 times the distance between 0 and m
(2) 12 is halfway between m and r
Value of r ?
(1) Let the Distance between 0 to r be r , Distance between 0 to m is m
r = 3m
Any value of r and m can be placed
In Sufficient
(2) 12 is halfway between m and r, { is the mean of m and r }
Try any values eg. 4 and 8 , (4+8)/2 = 6 , 6 is halfway between m and r
( m + r )/2 = 12 , m +r = 24 , it can be any value like 2 & 22, 3 & 21, 4 & 20 ,
Insufficient
Combining statements Together
m+r = 24 , r = 3m , 4m= 24 , m = 6, r = 18
Sufficient
It should be C,
