A Train After Travelling 150 Km Meets With An Accident at Traveling

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A Train After Travelling 150 Km Meets With An Accident. After travelling 3 hours a train meets with an accident due to this it stops for an hour. A train after travelling 50 km meets with an accident and then proceeds at 3/4 of its former speed and arrives at its destination 35 minutes late.

UK weather January 2021 was coldest in 10 years with more
UK weather January 2021 was coldest in 10 years with more from news.sky.com

The speed of the train is? Required time = 450 / 15 = 30 seconds After travelling for 3 0 minutes a train meets with an accident, due to which it has to stop for 4 5 minutes.

UK weather January 2021 was coldest in 10 years with more

Speed = {54 × (5/18)} m/sec = 15 m/sec. (or original time is $45×4=180$ minutes $=3$ hour). A train meets with an accident and travels at 4/7th of its regular speed hereafter and hence it reaches its destination 36 minutes late. It means it covers 300 km distance in 5 hours.