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Two cars. A and B started moving from the same point at the same time towards opposite direction. (A towards North and B towards South). If the-speed of car A 34.5 kmph and that of car B is 41.5 kmph, after how much time will they be 684km apart?(in hours)


A) 7

B) 11

C) 12

D) 8

E) 9

Correct Answer:
E) 9

Description for Correct answer:


Let the time be t hours.

Total distance \( = Speed \times Time \)

\( 684 = 34.5t \times 41.5t \)

\( t = 9 hours \)

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