A can finish the work in 18 days and B can do the same work in 15 days.B alone worked for 10 days and left the job.If A alone has to finish the remaining work the number of days it takes is
Rahul goes from one place to another and return by the same route. He pedals his way uniformly with speed u with going and v while returning.what is the average speed of his journey
A man observer of car from the top of a tower, which is moving towards the tower with a uniform speed . If the angle of depression of the car change from 30° to 45° in 12 minutes. Find the time taken by the car now to reach the tower
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