Question

A train passes 210 m long bridge in 21 s and a signal in 20 s.
Find the speed of the train in km/h. Plz tell me plz​

Answer 1

Answer:

HOPE IT HELPS U

Step-by-step explanation:

Total Distance of the bridge = 210 + x

length of signal = x

so ,

length of train = 210 + ×/21 = ×/20 (cross multiply)

= × = 4200

now , to find speed

(4200 + 210) - 4200

4410 - 4200  

210/1s

210 in km/hr

210×18/5

=58.33

MARK AS BRAINLIEST PLS

Answer 2

Answer:

58.33 kmph.

Step-by-step explanation:

Total Distance of the bridge = 210 + x

Let the length of signal = x

so ,

length of train = 210 + ×/21 = ×/20 (cross multiply)

= × = 4200

now , to find speed

(4200 + 210) - 4200

4410 - 4200  

210/1s

210 in m/s

210×18/5

=58.33 km/hr