21.

A 1200m long train crosses a tree in 120sec, how much time will I take to pass a platform 700m long?

A. 180sec B. 190sec
C. 170sec D. 175sec
Answer and Explanation
Answer:B
Explanation: L = S*T S= 1200/120 S= 10M/Sec. Total length(D)= 1900m T = D/S T = 1900/10 T = 190Sec
22.

A train is running at 72 Kmph. It was crossed an electronic pole in 20sec. find the length of the train?

A. 300m B. 400m
C. 250m D. 405m
Answer and Explanation
Answer:B
Explanation: L = S * T L = 72 Kmph * 20Sec L = 72* 5/18 * 20 L = 400m
23.

A train is running at 108 Kmph. It was crossed an electronic pole in 28sec. find the length of the train?

A. 480m B. 840m
C. 640m D. 740m
Answer and Explanation
Answer:B
Explanation: L = S * T L = 108 Kmph * 28Sec L =108 * 5/18 * 28 L= 840m
24.

A 180m long train is running at 72 Kmph. If it crossed the platform in 20sec. then find the platform Length?

A. 210m B. 220m
C. 240m D. 250m
Answer and Explanation
Answer:B
Explanation: Length = Speed*Time L = 72K.M/H*T L=72*5/18*20 L= 400M. Length of Platform= Length-Length of the Train Length of Platform= 400-180 Length of Platform=220m
25.

A 240m long train is running at 90kmph. If it crossed the platform in 30sec, then find the length of the platform?

A. 490m B. 500m
C. 510m D. 550m
Answer and Explanation
Answer:C
Explanation: L = S*T L=90*5/18*30 L=750m Length of Platform= Length-Length of the Train = 750 – 240 = 510m