Question

A train travels at a speed 50 km/hr for 0.5 hr, at 30
km/hr for next 0.26 hr and then 70 km/hr for next
0.76 hr. What is the average speed of the train?​

Answer 1

Answer:

given

sVWDSAUTRUK SAUYTRIK IS

Explanation:

u=50

mark AS BrAinliEst

Answer 2

Answer:

Average speed = Total Distance / Total Time

S1 = 50 km/hr T1 = 0.5 hr

D1 = S1 x T1 = 50 x 0.5 = 25 km

S2 = 30 km/hr T2 = 0.26 hr

D2 = S2 x T2 = 30 x 0.26 = 7.8 km

S3 = 70 km/hr T3 = 0.76 hr

D3 = S3 x T3 = 70 x 0.76 = 53.2 km

Total Distance = D1 + D2 + D3 = 25 + 7.8 + 53.2

Total Distance = 86 km

Total Time = T1 + T2 + T3 = 0.5 + 0.26 + 0.76

Total Time = 1.52 hr

Average Speed = 86/1.52

Average Speed = 56.58 km/hr