Question

Speed of train is 78km/h reach 25min late the station. If speed of train is 91km/h reach tha station 10 minute late. Find tha actual time

Answer 1

Answer:

Step-by-step explanation:

Let the distance be 546 km(L.C.M. of 78 and 91)

Time taken at 78 km/hr is 7 hours.

Time taken at 91 km/hr is 6 hours.

The difference is 60 min. The actual difference is 15 min. Therefore, the actual distance is 546/4 km.

Time taken at 91 km/hr is 90 min.

Therefore, actual time is 90–10=80 min.

Short cut:

Let distance be 91 km. time taken at 91 km/hr is 60 min.

Time taken at 78 km/hr is 70 min. The difference is 10 min. We need 15 min as difference.

Therefore, the time taken at 91 km/hr is 90 min.

Actual time should be 90–10=80 min.

Answer 2

Answer:

80 km for real

Step-by-step explanation: