question_answer

On a straight road four cities are there A, B, C and D   Distance between B and D is 39 km, between A and C is 27 km and between C and D is 15 km. How far is A from B?

A)  - 3 km                                  

B)  3 km

C)  24km                   

D)              12km

Correct Answer: B

Solution :

        BC = BD - CD = 39 - 15 =24 km \[\therefore \] AB = AC - BC = 27 - 24 = 3 km