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A train covers a distance of 90km/hr at a uniform speed.Had speed been 15km/hr more,it would have taken 30 minutes less for the journey,find the original speed of the train

Posted by Deepali Bansiwal 5 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 4 months ago

Let the original speed of train be km/h.

then increased speed km/hr

usual time hours

New time hours

According to the question

Rejecting the negative value, we have x = 45

Hence usual speed of train = 45 km/hr.

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Don't post personal information, mobile numbers and other details.
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Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

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CBSE > Class 10 > Mathematics