If a and b are positive numbers, what are the coordinates of the midpoint of line segment CD in the xy plane?
1. C = (a / 1-b)
2. D = (1-a / b)
OA follows
1. C = (a / 1-b)
2. D = (1-a / b)
OA follows
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Another one
Source: Beat The GMAT — Data Sufficiency |
Is the answer E , Bcos if you are representing a line segment in a X-Y plane , you shld have (X,y) co ordinates for both points C and D
I think, he means C=(a,1-b) and D=(1-a,b).
If so, the ans is C.
as midpoint is (a+1-a)/2,(1-b+b)/2 = (1/2,1/2)
hence using both we can find the midpoint.
If so, the ans is C.
as midpoint is (a+1-a)/2,(1-b+b)/2 = (1/2,1/2)
hence using both we can find the midpoint.
