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Updated on: 03 Jul 2021, 08:50
Originally posted by Animesh0001 on 03 Jul 2021, 07:40.
Last edited by Animesh0001 on 03 Jul 2021, 08:50, edited 1 time in total.
Last edited by Animesh0001 on 03 Jul 2021, 08:50, edited 1 time in total.
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Two trains 150 miles apart are travelling towards each other along the same track. The first train runs at 60 miles/hr and the second train is running at 90 miles/hr. A bird is sitting at front of engine of the first train. It flies from the first train to the second train and turns around immediately flying back to the first train and turns around again. It goes on flying back and forth until they collide. If the bird speed is 120 miles/hr , find the distance travelled by the bird in the direction of first train and in the direction of second train.
ANSWERS are : In the direction of Train 1(FIRST TRAIN) :90 miles, In the direction of Train 2(SECOND TRAIN) :30 miles
ANSWERS are : In the direction of Train 1(FIRST TRAIN) :90 miles, In the direction of Train 2(SECOND TRAIN) :30 miles
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Given: Two trains 150 miles apart are travelling towards each other along the same track. The first train runs at 60 miles/hr and the second train is running at 90 miles/hr. A bird is sitting at front of engine of the first train. It flies from the first train to the second train and turns around immediately flying back to the first train and turns around again. It goes on flying back and forth until they collide.
Asked: If the bird speed is 120 miles/hr , find the distance travelled by the bird in the direction of first train and in the direction of second train.
Distance between the 2 trains = 150 miles
Relative speed of the 2 trains = 60 + 90 = 150 miles / hr
Time taken till they collide = 150/150 = 1 hour
Total distance travelled by the bird during 1 hour = 120 miles /hour * 1 hour = 120 miles
Distance travelled by the bird in the direction of first train = (150 - 60) = 90 miles
Distance travelled by the bird in the direction of second train = 120 - 90 = 30 miles
Asked: If the bird speed is 120 miles/hr , find the distance travelled by the bird in the direction of first train and in the direction of second train.
Distance between the 2 trains = 150 miles
Relative speed of the 2 trains = 60 + 90 = 150 miles / hr
Time taken till they collide = 150/150 = 1 hour
Total distance travelled by the bird during 1 hour = 120 miles /hour * 1 hour = 120 miles
Distance travelled by the bird in the direction of first train = (150 - 60) = 90 miles
Distance travelled by the bird in the direction of second train = 120 - 90 = 30 miles
03 Jul 2021, 08:46
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Could you please elaborate more on the logic of the equation 150-60t=90 miles. Thanks.
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