Three friends, A, B and C have houses along a straight road, in that

Lets move set by set
statement first , I only knew distance b/w a & b (not sufficient)
Statement 2 , I ony knew distance b/w a & c (still not sufficient)

now lets consider both statements :

a-->b = 2
a-->c = 8

Now if we know positions also we can analyse this
case 1 : a b c
|-----||-----|
2 6
|-------------|
8
now we can find minimum combined distance: that is 8

Case 2: b a c
|----| |-------- |
2 8
|----------------|
10
now we can find minimum combined distance: that is 10

so we get 2 different answers , E is the answer.

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