1246 . A train 240 m long passes a pole in 24 seconds. How long will it take a pass a platform 650 m long?

A. 80 sec
B. 89 sec
C. 90 sec
D. 95 sec

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Answer: Option B

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1247 . A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?

A. 80. Sec
B. 89 Sec
C. 90 Sec
D. 95 Sec

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Answer: Option B

Explanation:

Given:

Length of the train = 240 m

Time taken to cross the pole = 24 s

Length of the platform = 650 m

Concept Used:

Time take into the platform = (length of train + length of the platform)/speed of the train

Speed of train = length of train/time taken

Calculation:

Speed of train = 240/24 = 10 m/s

Time taken to cross the platform = (240 + 650)/10 = 890/10= 89 s.

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সমন্বিত ৮ ব্যাংক ও ১ টি আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (সাধারণ) (20-01-2023)

A. 65 sec
B. 89 sec
C. 100 sec
D. 150 sec

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Answer: Option B

Explanation:

Hints : The train requires. 24 seconds to pass its length

Hence its speed is = 240 /24 m/s = 10 m/s

To pass 650m long platform it will pass total ( 650 + 240) or 890 m

So, time requires = 890/ 10 sec = 89 sec

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1249 . A train 360 m long is running at a speed of 45 km/hour. In what time will pass a bridge 140 m long?

A. 40 seconds
B. 42 seconds
C. 45 seconds
D. 48 seconds

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Answer: Option A

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1250 . A train 800 meters long is running at a speed of 78 km/hr . If it crosses a tunnel in 1 minute, then the length of the tunnel ( in meters ) is :

A. 360
B. 500
C. 540
D. 130

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Answer: Option B

Explanation:

78 km/hr = (78 × 1000) / 60 m/min = 1300 m/min

In 1 minute it travels 1300 m/min

1300 = 800 + length of tunnel

length of tunnel = 1300 - 800 = 500 merer.

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Bangladesh Bank - Officer(Cash) - 2016

A. 5940 m
B. 5490 m
C. 4950 m
D. 4590 m

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Answer: Option C

Explanation:

Let, both trains be equal size of x

Distance Relative speed x time

= > (x + x) = (108 + 90) × (5/18)× (3 × 60)

= > 2x = 198 x (5×18)× 3 × 60

= > 2x = 9900

∴ x = 4950m Ans.

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Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯

A. 100 kmph
B. 110 kmph
C. 120kmph
D. 130kmph

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Answer: Option C

Explanation:

ধরি, গাড়ির গতিবেগ x কিমি / ঘন্টা

ট্রেনের গাড়ির ( x + x × 500/100) = 3x/2 ঘন্টা

75x/x - 75/3x/2 = 12.5/60

75/x - 150/3x = 125/600

225 - 150 /3x = 125/600

125 × 3x = 600 × 75

x = 600 × 75 /125 × 3

x = 120

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1253 . A train covers a distance of 10 km in 12 minutes. If its speed is decreased by 5 km/hr, the time taken by it to cover the same distance will be :

A. 13 min 20 sec
B. 10 min
C. 11 min 20 sec
D. 13 min

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Answer: Option A

Explanation:

Hints:

speed of the train = distance / time

= 10 / ( 12/60) = 10× 60 / 12 = 50 km/h

Now speed = 45 km/h

Required time = 10 / 45 hour

= (2× 60)/ 9 = 40 /30 minutes = 13 minutes 20 second

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1254 . A train crossed a platform in 45 seconds travelling with a speed of 36 km/h. If the length of train is 200 meters, then what will be the length (in meters) of the platform?

A. 250
B. 200
C. 300
D. 350

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Answer: Option A

Explanation:

t= 45 s

v= 36km/h = 36×(5/18)= 10m/s

S= vt = 45×10= 450m

Length of the platform= (450-200) = 250m.

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সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (10-11-2023)

A. 120
B. 150
C. 160
D. 200

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Answer: Option C

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1256 . A train is moving at the rate 8 mi/h along a piece of circular track of radius 2500 ft. Through what angle does it turn in 1 min?

A. 0.3816 rad or 18.13
B. 0.2816 rad or 16.13
C. 0.2844 rad or 16.13
D. 0.2916 rad or 17.13

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Answer: Option B

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1257 . A train of length 150 metres takes 40.5 seconds to cross a tunnel of length 300 metres. What is the speed of the train in km/hr?

A. 13.33
B. 26.67
C. 40
D. 66.67

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Answer: Option C

Explanation:

Speed, ( 150 + 300)/40.5

= 450/40.5 m/sec

= 450/40.5 × 18/5 km/hr

= 40 km/hr

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1258 . A train passes a platform in 40 sec and a woman standing on the platform in 30 sec. If the speed of the train is 108 km/hr, what is the length of the platform?

A. 100m
B. 300m
C. 900m
D. 1020m

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Answer: Option B

Explanation:

Length of train=108×30×(5/18)=900m

Length of train+platform=108×(5/18)×40=1200m

So, Length of platform=1200-900=300m

(ans)

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Officer (General) -Ansar VDP Unnayan | BD House Building Finance Corporation 28.09.2018

A. 300 m
B. 120 m
C. 240 m
D. None of these

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Answer: Option C

Explanation:

Length of the train=54×20×(5/18)=300m

So,

Length of the platform=(54×36×5/18)-300=240m

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1260 . A train passes city X at 8.25 am and city Y at 11.05 am. The distance between city X and Y is 320 miles. What is the average speed in miles per hour of the train?

A. 135
B. 120
C. 270
D. None of these

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Answer: Option B

Explanation:

Here, 8:25 am to 11:05 am = 2 hr 40 min = 160 min = 160/60 hr = 8/3 hr

Speed = distance / time = 320 / (8/3) = 120 mph

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1246 . A train 240 m long passes a pole in 24 seconds. How long will it take a pass a platform 650 m long?

1247 . A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?

1248 . A train 240m long passed a pole in 24 seconds. How long will it take to pass a platform 650m long ?

1249 . A train 360 m long is running at a speed of 45 km/hour. In what time will pass a bridge 140 m long?

1250 . A train 800 meters long is running at a speed of 78 km/hr . If it crosses a tunnel in 1 minute, then the length of the tunnel ( in meters ) is :

1251 . A train can cross another train of equal length coming form the opposite direction with the speed of 108 km/h in 3 minutes . The speed of the other train is 90 km/h. Find the length of the train .

1252 . A train can travel 50% faster than a car. Both start lost about 12.5 minutes while stopping at the stations. The speed of the car is :

1253 . A train covers a distance of 10 km in 12 minutes. If its speed is decreased by 5 km/hr, the time taken by it to cover the same distance will be :

1254 . A train crossed a platform in 45 seconds travelling with a speed of 36 km/h. If the length of train is 200 meters, then what will be the length (in meters) of the platform?

1255 . A train crosses a single pole in 20 seconds while it corsses a 200 meter long plaftorm in 45 seconds. What is the length of the train in meter?

1256 . A train is moving at the rate 8 mi/h along a piece of circular track of radius 2500 ft. Through what angle does it turn in 1 min?

1257 . A train of length 150 metres takes 40.5 seconds to cross a tunnel of length 300 metres. What is the speed of the train in km/hr?

1258 . A train passes a platform in 40 sec and a woman standing on the platform in 30 sec. If the speed of the train is 108 km/hr, what is the length of the platform?

1259 . A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the train is 54 km/hr, what is the length of the platform?

1260 . A train passes city X at 8.25 am and city Y at 11.05 am. The distance between city X and Y is 320 miles. What is the average speed in miles per hour of the train?

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