28) S and R both started from the same point and in the same direction. S turned to her left and R to his right. S walked for 5 km in the direction in which she turned and on the other side R stopped for sometime and then walked for only 3 km. Then S turned to her left and R to his right. Then they walked 15 km and 9 km ahead respectively. What is the minimum distance between S and R?
a). 8km
b). 10km
c). 12km
d). 15km
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Answer:a) 8 km
Explanation:
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