(A) 36
(B) 45
(C) 48
(D) 49
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(A) 36
(B) 45
(C) 48
(D) 49
Answer: Option (C) 48
Explanation:
Relative speed = (60+ 90) km/hr
= 150 x (5/18) m/sec
= 125/3 m/sec.
Distance covered = (1.10 + 0.9) km = 2 km = 2000 m.
Required time = 2000 x (3/125) sec = 48 sec.