जॉइन Examsbookउत्तर : 4. "245 mts"
The length of a brigade which a train 130 m long and traveling at 45kmph can cross in 30 seconds, is5
प्र: The length of a brigade which a train 130 m long and traveling at 45kmph can cross in 30 seconds, is
- 1196 mtsfalse
- 2220 mtsfalse
- 3230 mtsfalse
- 4245 mtstrue
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उत्तर : 4. "245 mts"
व्याख्या :
Answer: D) 245 mts Explanation: Let the length of the brigade is x mtsThen Distance = 130 + x mtsgiven speed = 45 kmph = 45 x5/18 m/sTime = 30 secT = D/S => 30 = 130+x/(45x5/18)=> x = 245 mts.