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Olympiad-Math
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Class 9
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Everyday Mathematics
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Q)
Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is:
( A ) 8.9 sec
( B ) 9.5 sec
( C ) 10.8 sec
( D ) 7.4 sec
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