Math, asked by anugayathri04, 1 year ago

passenger train takes half hour less when its speed is increased by 15 km per hour then its usual speed for a journey of 90 km find the usual speed of the train

Answers

Answered by divergent07
2
ratio method if u understand then this is easy way...
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anugayathri04: No I cannot understand this method is there any other method
anugayathri04: But thanks
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